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theme, though they should never be very foreign to it. The overture to the Zauberflöte' affords a splendid example of this species. The Double Fugue consists of two or more subjects moving together, and dispersed among the different parts. Dom. Scarlatti's in D minor is a

double fugue which has no superior of its kind. The first few bars of this will more clearly explain than words can do the nature of so elaborate a species of composition.

Fugues of more than two subjects are classed, not very correctly,

Dic

Moderato.

&c.

among double fugues; they are, however, rare, for which reason perhaps they have never received a distinguishing name. Of these the fugue of four subjects in the finale to Mozart's grand symphony in C, and that of the same description in Handel's Alexander's Feast, the chorus Let Old Timotheus yield the prize,' are master-pieces of their kind. All of this species must be considered as free fugues. The term Fugue by Inversion requires little explanation. In this the theme is inverted, as the name implies, but the effect arising out of such contrivance is appreciable only by those who know its difficulty, and estimate its merit by the quantity of labour it has cost. In the Fugue by Augmentation, the notes of the answer are doubled in length. In the Fugue by Diminution, exactly the reverse takes place. There are

other kinds of Fugue, but they are now almost forgotten, and it would be useless to revive their names. Imitation is a species of fugue, and by theorists is generally treated on previously to and as the precursor of the latter. As the word indicates in this kind of composition, the theme is more or less imitated in the different parts. It is not required, says Fux (Gradus ad Parnassum), that every note should be imitated, but only some part of the subject; and Imitation is rather to take place in the middle than in the commencement of a composition. It may be made in any of the intervals, and in fact is governed by scarcely any rule. The learned contrapuntist just named gives the following as an example of Imitation in the Unison :

The effect of technical imitation in music is unquestionably great; it is felt by all who have the slightest skill in the art, therefore employed by all great composers of every school, ancient and modern. Canon, which is sometimes called a perpetual fugue, may perhaps be admitted, though cautiously, as part of a course of professional study, but should rarely, if ever, be allowed to pass the boundaries of the school. [CANON.] Fugue, but not of the pedantic or fantastic kind, should be an object of serious attention with those who are ambitious of becoming great composers, though in its severe form it ought to be almost confined to cathedral music and to the oratorio, and is admissible there only when introduced with great discretion, and guided by the hand of an experienced sensible master. But without that which is here to be understood by the term imitation-or the recurrence, in some shape, of the chief subject-music in parts, of even a very simple kind, loses one of its greatest beauties. Let it be used however with a view solely to effect: if resorted to for the mistaken purpose of displaying what a young or a dull composer may call his learning, imitation will prove to be nothing better than mere plodding, and capable of exciting no emotion except that which is the very reverse of pleasing. FULCRUM. [LEVER.]

FULGURITE. [LIGHTNING; and FULGURITE in NAT. HIST. DIV.] FULLING. [WOOLLEN MANUFACTURES.] FULMINATING MERCURY (HgO,, CN,O,). The compound of Fulminic Acid with mercury. It is prepared by dissolving 1 part of mercury in 12 of nitric acid, sp. gr. 1·36, and then adding 11 parts of alcohol, sp. gr. 850. If a gentle heat be now applied by means of a water-bath violent reaction ensues, metallic mercury is deposited, and minute crystalline grains of fulminate of mercury separate, these must be washed with cold water and dried at 100° Fahr. They explode violently by percussion or heat, or by contact with sulphuric acid. The preparation even of small quantities of fulminating mercury is attended with considerable danger, and ought not to be attempted by any one unacquainted with chemical manipulation. Mixed with six times its weight of nitre it is used for priming percussion caps.

FULMINATING SILVER (2AgO, C,N,O,). This salt of fulminic acid is obtained by dissolving 1 grain of silver in 20 grains of nitric acid diluted with 50 grains of alcohol. The remaining processes are similar to those used for the preparation of fulminating mercury, than which it is still more dangerously explosive. [FULMINATING MERCURY.] FULMINIC ACID (2HO, NC,Ó2). An acid which is isomeric with cyanic acid [CYANIC ACID], that is, composed of the same elements in the same proportions, and they appear to have similar saturating powers. Fulminic acid has not yet been isolated, but it exists in the detonating mercury and silver discovered by Mr. Howard. These fulminates, as shown under the respective metals, are prepared by the simultaneous action of nitric acid and alcohol upon them in this operation the metals are oxidized, and such portions of the carbon of the alcohol, and nitrogen and oxygen of the decomposed

nitric acid combine, as to form the fulminic acid. Fulminic acid may be separated from the oxides of silver and of mercury, and combined with other bases, as with potash, and it still retains its power of forming detonating compounds. [CYANOGEN.]

FULMINURIC ACID (HO, CH, N, O,), Isocyanuric Acid. A recently discovered acid isomeric with cyanuric acid. The salts of this acid are obtained by boiling the different fulminates with a solution of a soluble chloride. They crystallise generally with facility, and explode feebly on the sudden application of heat. [CYANOGEN.] FUMARIC ACID. Boletic acid. This acid was first procured by Braconnot from the boletus pseudo-igniarius by the following process: the expressed juice is to be evaporated to the consistence of a syrup, and then treated with alcohol, which leaves a white matter; this is to be washed with alcohol, then dissolved in water, and precipitated with a solution of nitrate of lead; the precipitate diffused through water is to be decomposed by sulphuretted hydrogen gas; by evaporating the remaining solution there are obtained impure crystals of fumaric acid, and a very acid mother-water, composed of fungic and phosphoric acids. The crystals of fumaric acid are redissolved in alcohol, which leaves a calcareous salt, and by evaporating the solution purer crystals of fumaric acid are procured. Fumaric acid may also be obtained by submitting malic acid to heat, and it is also present in Iceland moss, fumitory and other vegetables.

Fumaric acid is colourless, crystallises in four-sided prisms; its taste is acid, like that of bitartrate of potash; it reddens litmus, does not alter by exposure to the air; is gritty, like sand, between the teeth. It is soluble in 180 parts of water at 68°, and in 45 parts of alcohol. By heat the greater part of it is sublimed either in prismatic crystals or in fine powder; but towards the end of the operation some empyreumatic oil is formed, and there is a strong smell of acetic acid. It has the peculiar property of precipitating the peroxide of iron from solutions, but not the protoxide.

This acid forms salts with the alkalies and other bases; they are called fumarates. They are not important compounds, none of them being applied to any use. (Berzelius, Traité de Chimie,' tom. 5, p. 102.)

FUMARAMIDE (C.H.N,O,). When the fumarate of oxide of ethyl, which is a heavy oily liquid, is acted on by aqua ammoniæ, it forms a white insoluble powder, which is fumaramide, and possesses all the characters of a compound amide.

FUMARIMIDE (C‚Â ̧NO̟ ̧?). A reddish amorphous powder, formed by exposing bimalate of ammonia to a heat of about 400° Fahr. Heated for several hours with hydrochloric acid, it yields aspartic acid.

CH,NO,+4H0=C,H,NO,

Aspartic acid.

FUMIGATION is the application of the vapour or fumes from metallic or other preparations to the body, with the intention of healing

either generally, or particular parts. The vapours of hot vinegar, burning sulphur, and of aromatic vegetable matters, have been long used to counteract unpleasant or unwholesome smells: this is effected chiefly by the formation of such as are stronger. The most important kind of fumigation is that which consists in the employment of such vapours or gases as do not merely destroy unhealthy odours by exciting such as are more powerful, but which by their chemical action convert dangerous miasmata into innocuous matter.

The fumigation of the first kind, that which is intended to produce a healing effect, is now much less employed than formerly; still, however, the bisulphide of mercury is occasionally used in vapour, as what is termed a mercurial fumigation, in certain forms of syphilis. The use of vinegar, of aromatic pastilles, and even the smoke of burning brown paper, which constitute the second kind of fumigation, does not require any particular notice; their operation can hardly be regarded as any other than that of substituting one smell for another. In the last kind of fumigation three substances have been chiefly employed, and in the gaseous state: first the vapour of burning sulphur, or sulphurous acid gas, hydrochloric acid gas, nitrous acid gas, and chlorine gas; all but the last of these, or at any rate the first and second named, appear to have been first used and recommended by Dr. James Johnstone, of Worcester, about the year 1758; in 1773 Guyton de Morveau also mentioned the application of hydrochloric and nitrous acid gases, and in 1802 their use was still further extended by Dr. J. C. Smith, who received a public remuneration as the discoverer, which he certainly was not.

Chlorine gas, which is undoubtedly preferable to any disinfectant, was first recommended by Dr. Rollo, who published a work on diabetes in 1797; he liberated the gas by the usual method of mixing sulphuric acid, binoxide of manganese, and common salt. When it is desirable to produce a great effect in a short time, this is still unquestionably the best mode of proceeding.

We shall give an abstract of the mode adopted by Mr. Faraday in fumigating the Penitentiary at Milbank in 1825. (Quarterly Journal,' vol. xviii., p.-92.)

The space requiring fumigation amounted to nearly 2,000,000 cubic feet; and the surface of the walls, floors, ceilings, &c., was about 1,200,000 square feet. This surface was principally stone and brick, most of which had been lime-washed. A quantity of salt reduced to powder was mixed with an equal weight of binoxide of manganese, and upon this mixture were poured two parts of sulphuric acid, previously diluted with one part of water, and cold. The acid and water were mixed in a wooden tub, the water being first put in, and it being more convenient to measure than to weigh the water and acid, ten measures of water and nine of acid were used; half the acid was first used, and when the mixture had cooled the remainder was added.

was the carbonic acid which produced this effect, was further proved by passing a current of this gas into a solution of chloride of lime; by this it lost its bleaching power, the whole of the chlorine was expelled, and all the lime converted into carbonate.

In order to show the manner in which these compounds of chlorine and lime, and of chlorine and soda, act on putrid miasmata floating in the air, some further experiments were made in the following manner: Air was passed through blood which had been left to putrefy for eight days; being then passed through a solution of the chloride of lime, carbonate of lime was deposited, and the air was rendered inodorous and completely purified. In a second similar experiment the fetid air was passed through a saturated solution of potash before it arrived at the solution of chloride of lime; the latter had then no effect upon it, and the air retained its insupportable odour; this happened evidently because the carbonic acid, which would otherwise have evolved chlorine to have acted upon the putrid matter, was absorbed by the potash. Another experiment was made with air left for twenty-four hours over putrescent blood; the portion of it which was passed directly through the chloride was perfectly purified, but when previously freed from carbonic acid the chloride had no effect upon it.

These experiments sufficiently prove that the carbonic acid in the air, arising from the various sources of respiration, combustion, and the decomposition of animal and vegetable matter, liberates the chlorine from its combination with lime or soda; and as this action is slow, the chlorine, though scarcely susceptible of affecting the animal economy, readily decomposes putrid miasmata. It is therefore true fumigation by chlorine, only it is less violent than that effected by the rapid evolution of the gas, and it continues for a longer time. It is to be observed that chloride of lime is used in solution, and is obtained by dissolving one part of bleaching powder in about 100 times its weight of water, and allowing the solution to become clear. This is to be exposed to infected air, or in rooms which have any unpleasant odour, in flat vessels, in order that a sufficient surface may be acted upon. If it should be required, the operation may be quickened by the addition of a little vinegar, or of muriatic acid largely diluted. In some cases, where the disagreeable smell is extremely strong, and where it would be difficult to expose a solution to slow action, it may be thrown into the place, or the powder may be used, the action of which would be more gradual and effectual. Chloride of soda is prepared only in solution; the process is given in the last edition of the London Pharmacopoeia:' it is however less easily obtained than the chloride of lime, is more expensive, and not in any respect preferable; the solution is then called liquor sodæ chlorinatæ.

FUNCTION, ARBITRARY. In the integration of partial differential equations, arbitrary functions are introduced, that is, functions which may be of any form whatsoever. Thus, in the problem of the vibrations of a thin column of air, which leads to an equation of the form dez d2z = α dx2 dy

z = $ (y + ax) + ¥ (y — ax)

Into common red earthen pans, each capable of holding about a gallon, were put 3 lbs. of the mixed salt and manganese, and there was then added such a measure of the diluted acid as weighed 44 lbs.; the mixture was well stirred and then left to itself, and all apertures were well stopped. The action did not commence immediately, so that there was sufficient time for the operator to go from pan to pan without inconvenience. On entering a gallery 150 feet in length, a the complete solution of the equation is few minutes after the mixture had been made, the general diffusion of chlorine was sufficiently evident; in half an hour it was often almost impossible to enter, and frequently on looking along the gallery the yellow tint of the atmosphere could easily be perceived. Up to the fifth day the colour of the chlorine could generally be observed in the building; after the sixth day the pans were removed, though sometimes with difficulty, and the gallery thus fumigated had its windows and doors thrown open. The charge contained in each pan was estimated to yield about 5 cubic feet of chlorine gas; in fumigating a space of 2,000,000 cubic feet, about 700 lbs. of common salt and the same of binoxide of manganese were employed and it will appear by a slight calculation, that about 1710 cubic feet of chlorine were employed to disinfect this space. In common cases, Mr. Faraday conceives that about one-half to one-fourth of this quantity of chlorine would be sufficient.

When any cause for fumigation is continually recurring, and in some cases almost imperceptibly so, the chloride of lime or soda, and especially of the former, has been within a few years successfully employed by M. Labarraque; the exact nature of these compounds is still under discussion, but the chloride of lime is a substance well known and extensively employed under the name of bleachingpowder.

when and stand for any functions whatever. The determination of
these arbitrary functions must depend upon the data of the problem.
Thus, if it were required so to determine o and as that z should
the forms of p and from the two equations
become x wheny is x, and x2 when y is bx: we have then to determine

(x + ax) + 4 (2 ax) = x
(bx+ax) + 4 (bx — ax) = x2

These two functional equations might be solved without much difficulty, and forms of pc and a found. Theoretically, the determination of the arbitrary functions, so as to satisfy given conditions, resolves itself into the solution of functional equations.

But when these questions were first considered, it was soon seen that the problems from which they are derived present very peculiar circumstances. For instance, when the problem is that of finding the manner in which a disturbance travels along a thin column of air, the preceding equation exists, where z represents the amount of compression or rarefaction which exists in the air at a distance y from a fixed origin at the end of the time x from the beginning of the motion. We shall relate a few experiments performed by M. Gualtier de Now, in practice, there is no disturbance of the state of the air at the Claubry, illustrative of the mode in which these substances produce beginning of the motion, except in one small part of the column (as in their effects. A solution of chloride of lime exposed to the air for a sound excited at one end of a cylindrical tube). Suppose, for exabout two months, ceased to act upon litmus, contained no chlorine, ample, that by introduction of external air, a certain amount of combut a precipitate was formed in it which consisted entirely of carbonate pression, c, is generated at the first moment (x = 0) throughout the of lime, without any admixture of chlorine; it was therefore evident portion of the tube which extends from y = 0 to y = m. When x = 0, that the carbonic acid of the atmosphere had decomposed the chloridez is oy+vy, and the conditions of the problem require that oy + vy of lime, evolved the chlorine, and precipitated the lime. That this should be equal to c when y lies between 0 and m, and always equal to was the case was proved by passing atmospheric air through a solution nothing when y is greater than m. Hence, py + y must be a disof potash, before it was made to traverse one of chloride of lime; in continuous function; so that in this simple problem mathematical this case the potash separated the carbonic acid, so that no chlorine methods are insufficient to express a solution, unless discontinuous was evolved from the solution of chloride of lime, nor was any pre- functions can be admitted among the solutions of partial differential cipitate formed in it; in fact no change whatever occurred. That it equations.

There was, at one time, a spirited discussion between Euler, D'Alembert, and Lagrange, as to whether discontinuous functions could properly be admitted among the solutions of differential equations. We cannot enter into the details of this discussion, but we shall state the manner in which the question has been settled.

The considerations in CURVE give some approach to the notion that curves which are perfectly independent may be combined in one equation; and also that a continuous curve may be drawn, the arc of which runs as near as we please to two distinct branches of two independent curves. The power of expression given by means of definite integrals and periodic series [INTEGRALS, DEFINITE], puts this result in a stronger light. Suppose, for example, that an axis of x being taken, we want to express mathematically the ordinate y, in such manner that it shall be nothing from x = — ∞ to x = 0; that of a certain straight line from x = 0 to x = a; that of a certain circle from x = a to x=b, and nothing again from x = b to x = ∞. In other words, we ask whether a line which is both limited and discontinuous, being a part of a straight line and a part of a circle, can be put upon the same sort of footing as an algebraic curve; so that a definite equation y=4x shall always give y = 0 when there is no ordinate, and shall give the proper value of y whenever there is an ordinate. The answer to this is, that such an expression for pr can be given, when the notation of the integral calculus is assumed. And more than this, a continuous curve can be found which fulfils all the conditions above noted, as nearly as we please. That is, m being a small quantity which we may name as small as we please, it is possible to find a continuous curve, the ordinate of which shall never be so great as m from x = ∞o to x = 0, shall never differ by so much as m from the ordinate of the straight line while x passes from 0 to a, nor from that of the circle while x passes from a to b, and finally, shall never be so great as m from x = b to x = o. Having the power of making m as small as we please, we thus trace the expression, as it were, into its final

discontinuous form when m == 0.

In this manner, it appears that every discontinuous function may be regarded as the limiting form of a continuous one; and the various modes in which this is established take away all idea of danger from admitting discontinuous functions among the solution of differential equations. This subject is well studied in its application to physics.

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P

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x2

x + h h h2 h3

For

when h=0, all the terms become infinite, but the first side of the
equation is not infinite. Secondly, he assumes that there cannot be
fractional powers of h, for if such were the case, there must be frac-
tional powers in the original function px, and if px had m different
values, and if Kh were one of the terms of the development, the n
values of this latter, combined with the m values of pr, would give
mn different values to p (x+h), instead of m. In answer to this it
may be asked how is it known, à priori, that there must be a series of
it not possibly be true that there is an expression of the form
powers of h, every value of which is an expansion of ø (x+h)? May

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which is true under certain conditions, determining which of the values of the several terms are to be taken? Thirdly, he assumes that (having thus obtained a series, in which only whole powers of h are found) the supposition h=0 must reduce it to its first term; an assumption which can only be admitted of such a series as M+Ah +Bh2 + .... when it can be made convergent by giving sufficiently small values to h.

Having once proved or assumed that p (x+h) can be expanded in a series of the form px+ah+Bh2+... the proof of Taylor's Theorem, given by Lagrange, does not differ from the common one. He calls A the derived function of ox, and denotes it by p'x: generally, if changing x into x+h change P into P+Ph+...., P' is the derived function of P. The derived function of p'x, denoted by "x, is called the second derived function of px, and so on. By changing a into

FUNCTIONS, CALCULUS OF. By the term function of a quantity is meant any algebraical expression, or other quantity expressed algebraically or not, which depends for its value upon the first. Thus the circumference of a circle is a function of the radius; the expres-x+k, p (x + h), or px + Ah+Bh2 + ......., becomes sion (a2x2) (b2 + y2) is a function of a, b, x, and y. For the distinctive names of functions, see TRANSCENDENTAL and ALGEBRAICAL.

(px+p'x. k + . .) + (a + ▲'k + . .)h + (B+ B'k + ..)h2 +....

px+▲ (h + k) + B (k + k)2 + ....

All algebra is, in one sense, a calculus of functions; but the name is peculiarly appropriate, and always given, to that branch of investi- and by changing l into h+k, 4 (x + h) becomes gation in which the form of a function is the thing sought, and not its value in any particular case, nor the conditions under which it may have a particular value. [EQUATIONS, FUNCTIONAL.] For instance, "What is that function of x which, being multiplied by the same function of y, shall give the same function of x+y?"-is a question of the calculus of functions.

Various isolated questions connected with this calculus have been treated, from the time of Newton downwards, particularly by Lagrange, Laplace, Monge, and Euler. But the direct solution of functional equations, or at least the first attempt to form general methods in the case of functions of a single variable, appears to have been made by Mr. Babbage and Sir J. Herschel (1810-1813). To the treatise entitled 'Examples of the Calculus of Differences,' by the latter, the former appended another, containing examples of the solutions of functional equations. This last, and the article' Calculus of Functions,' in the Encyclopædia Metropolitana,' are the only formal treatises on the subject of which we know.

A function of x is denoted by ox, 4x, xx, fx, Fx, bx, &c., &c., the first letter being a symbol of an operation to be performed. Thus, Ffx denotes that when the operation signified by ƒ has been performed upon x, that signified by F is performed upon the result. When the same operation is repeated, the results may be denoted by fx, fx, fffx, &c., which may be abbreviated into fx, fx, f3x, &c. For different points of interest connected with the relations of functional forms, see PERIODIC; INVERSE.

6

FUNCTIONS, THEORY OF, a name given by Lagrange to a view of the principles of the Differential Calculus, of which we have expressed our opinion in the article DIFFERENTIAL CALCULUS. The works of Lagrange, in which its details are to be found, are Théorie des Fonctions Analytiques,' first edition, 1797, second edition, 1813; and Leçons sur le Calcul des Fonctions,' of which the first publication is vol. x. of the Leçons de l'Ecole Normale' (1801); the first separate edition was published in 1797, and the second was published in 1806.

Taking Lagrange's intention to have been the proof that algebra, as it existed in his time, was sufficient to demonstrate the principles of the Differential Calculus without the introduction of limits, we have only to remark that the end is completely attained. [DIFFERENTIAL CALCULUS.] It is plain to any one acquainted with that calculus, that a demonstration of Taylor's Theorem being once attained, all the rest follows. We now proceed to look at the proof of this

These must be the same, since both represent (x+h+k): and by equating the terms which contain the first powers of k, we find

O'x + ▲'h + B'h2 + ... = A +2вh +....

whence A='x, 2в= A'="x, and so on. The reader will recognise in this process the proof frequently given by means of the preliminary lemma, that if

u=4(x+h), then

du du
dx dh

=

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The works of Lagrange on this subject, though defective in their fundamental positions, except upon the explanation given in DIFFERENTIAL CALCULUS, yet abound in new and useful details, given with all the elegance for which his writings are distinguished: and the student will find them well worth his attention.

FUNDAMENTAL BASE, in music, is the lowest note of the Perfect Chord, or Triad, as the Germans call it, and of the chord of the 7th: hence it is the root of all real chords;-for chords not derived from either the perfect chord or that of the 7th, are considered as suspensions or retardations; or, to speak in unaffected language, the discordant notes of which they are composed are simply appogiaturas. [CHORD.]

The following will show the two Fundamental Chords, and their inversions, with the continued [CONTINUED BASE], or ordinary base. and the Fundamental Base.

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believe, by Dr. Callcott. The system of the Fundamental Base, founded on harmonics, and a continual addition of thirds to the triad, is indebted for its origin to Rameau, the celebrated French composer [RAMEAU, in BIOG. DIV.], and was once almost universally received. D'Alembert wrote a book to explain and eulogise it, and Marpurg, a most distinguished theorist, adopted it in his Handbuch bey dem Generalbasse.' But though it may be rendered in some degree serviceable in the analysis of chords, it is in more than one respect erroneous, and the rules drawn from it by its author would cruelly fetter genius, were they allowed to exert any influence on the composition of music. Rameau's once vaunted system is now therefore entirely laid aside, even in the country that gave it birth.

FUNDS; FUNDING SYSTEM. [NATIONAL DEBT.]

FUNERAL, the performance of the rites of sepulture or burial; generally supposed to be derived from the Latin funis, "a torch," because, at least in the Roman times, funerals were sometimes performed by torch-light. Others derive the word from phonos (póvos), "slaughter," as designating death.

The Egyptians are among the earliest people of whose religious ceremonies we have authentic accounts, more particularly in what related to their dead. Upon this occasion the parents and friends of the deceased put on mourning habits, and abstained from gaiety and entertainments. The mourning lasted from forty to seventy days, during which time the body was embalmed, and, when the process was completed, placed in a sort of chest, which was afterwards preserved either in their houses or in the sepulchres of their ancestors. Before the dead were allowed to be deposited in a tomb, they underwent a solemn judgment, upon an unfavourable issue of which they were deprived of the rite of burial. The funeral was conducted with great ceremony. The embalmed body was conveyed on a kind of sledge drawn by cows or oxen, or placed in a boat and towed along the river. In front of the bier, a seated figure representing Anubis is often seen in Egyptian paintings. The sledge was preceded by hired female mourners, with their breasts uncovered, and their hair hanging loose down their backs. The relatives followed, and priests were in attendance to perform the necessary religious ceremonies; but, judging from the ancient paintings of funerals, the arrangements varied considerably with persons of different ranks and at different times. (See Rossellini, plates No. cxxvii., &c.; and Wilkinson.)

Among the ancient Jews it is clear that great regard was paid to a due performance of the rites of sepulture. (Gen. xxiii. 2-4; I. 7-13; 2 Chron. xxxii. 33; Amos v. 16; and the references to interment generally throughout the Scriptures.) In Egypt and Babylon the Jews seem to have placed the body in a coffin; but elsewhere, both in the earlier ages and in the time of our Saviour, it was customary to wrap the corpse in linen cloths and carry it quickly to the tomb. That they sometimes burnt the body is clear; but burial in a sepulchre was the more usual fashion. (See further, Jahn, 'Jewish Antiquities,' §§ 205211, and the various commentators on the Bible. The circumstances attending the burial of the dead among the modern Jews are minutely detailed by D. Levi, in his 'Succinct Account' of their Rites and Ceremonies, pp. 162-170.)

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In the religious creed both of the Greeks and Romans, sepulture was peculiarly an act of piety towards the dead, without which it was supposed the departed spirit could not reach a place of rest. To be deprived of the proper rites was considered the greatest misfortune (Homer, Od.,' v. 311, and xi. 66); and the abhorrence of certain crimes was strongly marked by the refusal of burial to criminals convicted of them. The funeral rites of the Greeks and Romans were in many respects similar, and among both nations the practice prevailed of burning the dead and collecting the ashes in urns. In the case of public funerals, according to Servius's Commentary on Virgil,' the deceased was kept seven or eight days, and every day washed with hot water, or sometimes with oil, that in case he were only in a slumber he might be waked; and at stated intervals, his friends, meeting, made a shout with the same view: this was called conclamatio. On the seventh day, if no signs of life appeared, he was dressed and placed on a couch in the vestibule, with the feet outwards, as if about to take his departure, a piece of coin being placed in his mouth for the purpose of paying the fee of the ferryman in Hades. In the course of these seven days, an altar was raised near the bed-side, called acerra, on which the friends offered incense. The scene here described is frequently represented in ancient bas-reliefs: several such are in the British Museum. On the seventh day the last "conclamatio" ended, when the couch and body were carried to the rostra, where the nearest of kin pronounced the funeral oration, and afterwards to the funeral pile. In the case of persons of importance, the funeral procession was often very splendid. The cost of funerals of persons dying intestate was determined by an officer appointed for the purpose. The body having been consumed, the ashes were gathered, inclosed in an urn, and finally laid in the sepulchre or tomb. An apotheosis, or canonisation, was frequently part of the funeral ceremony of the emperor. A banquet was a part of the funeral ceremony among both the Greeks and Romans. Although the practice of cremation was general with both people, interment was always more or less resorted to. The practice of burning the dead eventually gave way before the spread of Christianity.

In the British Museum are numerous marble cinerary urns (or those

whie à contained the ashes of the dead), both of Greek and Roman date, and others of painted earthenware, both Greek and Etruscan. There are also in the British Museum many solid funeral urns, which were merely commemorative of the deceased; as well as inscribed monumental tablets, and columns, or cippi. We give cuts of two of these Greek urns. The first, a fragment of a fine cinerary urn, is in the Elgin Saloon (No. 275). The young man and woman who are joining

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that the standing figure in the centre of the bas-relief represents Pamphilus, son of Mixiades, of the deme Ægilia, the seated figure being his sister Archippe.

The funeral rites of the Greeks and Romans have been collected with great research by Guichard in his 'Funérailles, et diverses Manières d'ensevelir des Romains, Grecs, et autres Nations,' 4to, Lyon, 1581; by Meursius, in his treatise De Funere Græcorum et Romanorum,' 12mo, Hag. Com., 1604; by Gutherius, 'De Jure Manium, seu de Ritu, More, et Legibus prisci Funeris,' 12mo, Par., 1613, reprinted in 4to, 1615, and again in 8vo, Lips., 1671; and by Kirchman, 'De Funeribus Romanorum Libri IV., 12mo, Hamb., 1605, and Lugd. Bat., 1672. See also the Ceremonies Funèbres de toutes Nations,' par le Sr. Maret, 12mo, Par., 1677; Stackeberg, 'Die Gräber der Hellenen,' and Kirchman, ' De Funeribus Romanis.'

For the funeral rites of the early Christians, the reader may consult Gretser De Funere Christiano,' 4to, Ingolst., 1611; and he may learn the customs of a later period from Durand, who wrote his 'Rationale Divinorum Officiorum' in the 12th century.

Investigations among the sepulchral tumuli of the northern nations show clearly that though before the introduction of Christianity the practice of cremation prevailed, that of burying the dead unburnt was observed also in the later periods of the pre-historic era, in Norway and Denmark, as well as throughout Germany, France, and England. (See Worsaae's 'Primeval Antiquities of Denmark,' translated by W. J. Thoms, 1849; and the articles CROMLECH and TUMULUS.)

Tacitus, in his treatise De Moribus Germanorum,' (c. 27) notices the simplicity of the funerals among the ancient Germans. Like the Romans, they burned their dead. The things which a German valued

most were his arms and his horse: these were added to the funeral pile, with a persuasion that the deceased would have the same pursuits in his new state of existence. In the tomb of Childeric, king of the Franks, his spear, his sword, with his other warlike weapons, and even his horse's head, were found. (See Montfaucon, 'Monumens de la Monarchie Françoise,' tom. i. p. 10.)

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Brand, in his Popular Antiquities,' vol. ii., p. 139 to 212, has much upon the English ceremonials, beginning with Watching with the Dead,' called in the North of England the Lake-Wake; he then proceeds with Laying out or streaking the Body;' setting salt or candles upon it; funeral entertainments; sin-eaters; mortuaries; following the corpse to the grave, and carrying evergreens, torches, and lights, at funerals; black used in mourning; the pall and under-bearers; doles and donations to the poor at funerals; church-yards; garlands in churches; and strewing flowers upon graves. Strutt's 'Manners and Customs,' Gough's Sepulchral Monuments of Great Britain,' and 'Notes and Queries,' vols. vi. to xii. of series 1, are other works to which the reader may refer for the older funeral rites of England.

Funeral entertainments, called silicernia and cœnæ ferales by the Romans, are of very ancient date. They are still kept up in the north of England, and are there called arvals or arvils. Among some extracts from the Berkeley Manuscripts, we read that "From the death of Maurice, the fourth Lord Berkeley, which happened June 8th, 1368, until his interment, the reeve of his manor of Hinton spent three quarters and seven bushels of beans in fatting one hundred geese towards his funeral, and divers other reeves of manors the like, in geese, ducks, and other poultry." Walsingham, speaking of those who attended Richard II.'s funeral at Langley, in 1399, says, "Nec erat qui eos invitaret ad prandium post laborem." (Hist." p. 405.) Shakspere has a well-known allusion to these feasts in Hamlet,' act i. sc. 2:

"The funeral baked meats

Did coldly furnish forth the marriage tables."

Lafitau, Charlevoix, and other travellers describe funeral ceremonies not unlike some of those above noticed as prevalent among the savages of America. Robertson ('Hist. of Amer.' vol. ii., b. 4) says, as they imagine that departed spirits begin their career anew in the world whither they are gone, they bury together with the bodies of the dead, their bow, their arrows, and other weapons used in hunting or war; they deposit in their tomb the skins or stuffs of which they make garments, Indian corn, venison, domestic utensils, and whatever is reckoned among the necessaries in their simple mode of life.

FUNERAL ORATIONS, discourses at funerals, are of great antiquity. The second book of Thucydides (c. 35, &c.) contains the laboured harangue delivered by Pericles at the solemn funeral ceremony instituted in honour of those Athenians who fell at the beginning of the Peloponnesian war; and other similar orations are extant in Greek. Augustus, at the early age of twelve, performed this office for his grandmother, and afterwards, when emperor, for the young Marcellus. Tacitus tells us that Nero pronounced a funeral oration over Funeral orations were equally common his wife Poppaa. Christian martyrs; and Durand, in his 'Rationale,' says, "Ceterum priusquam corpus humo injecta contegatur, defunctus oratione funebri laudabatur." Fuller, in his Appeal of Injured Innocence' (part iii. p. 75), and Misson, in his Travels in England,' show the continuance of this practice to the close of the 17th century. Gay alludes to it in his 'Dirge :'

"Twenty good shillings in a rag I laid,
Be ten the parson's for his sermon paid."

over

The practice of delivering what may be properly called funeral orations, that is, addresses over the grave or at the interment of the dead by laymen, is common among the French, and is not unfrequent on great occasions among the people of the United States. In France the Oraisons Funèbres' of Bossuet and Fléchier have deservedly a high reputation.

FUNERAL SHOWS and GAMES frequently followed public funerals among the Greeks and Romans. An early example of this occurs in the funeral games celebrated by Achilles in honour of Patroclus. (Homer, 'Iliad.') As the dead were supposed to be delighted with blood, various animals, especially such as the deceased had been fond of, were slaughtered at the pile, and thrown into it: and, in still ruder times, captives or slaves. Among the Romans, gladiators, called bustuarii, were made to fight. Junius Brutus exhibited gladiators at his father's funeral; and the 'Adelphi' of Terence, at a later period, was produced for the first time at the funeral of Lucius Æmilius Paulus.

This acid, when pure, is colourless, very sour, uncrystallisable, and deliquescent; with lime it forms a salt difficult of solution, and with potash and soda deliquescent uncrystallisable salts; in these and some other properties it resembles impure malic acid. Some doubt exists as to whether it is a distinct acid, and M. Depaignes states that it is merely a mixture of malic, citric, and phosphoric acids. FUNGIN, the name given by Braconnot to the fleshy substance of mushrooms, purified by digestion in a hot weak solution of alkali: it is whitish, soft, insipid, and but little elastic, It is not acted upon by water, alcohol, ether, dilute sulphuric acid, potash, or soda; it is dissolved by hydrochloric acid when heated, and it decomposes and is decomposed by nitric acid; the results are much gas, oxalic acid, a bitter yellow matter, and two fatty substances, one of which resembles wax, and the other suet; the latter is most abundant. It is a highly nutritious substance, and in many of its properties it strongly resembles cellulose. [CELLULOSE.] FUNICULAR CURVE. [CATENARY.]

FUNICULAR MACHINE is a name given by some mechanicians to a cord or chain attached at one extremity to an immoveable point, the other end passing over a fixed pulley or friction wheel and having a weight suspended from it; a weight being also suspended from the cord or chain in some part of its length between the fixed extremity and the pulley. The cord or chain becomes thus a mechanical agent, since unequal weights, applied as has been said, may be in equilibrio.

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Let A CB in a vertical plane be the position of a cord suspended between two points A and B, but capable of moving freely on a pulley at each of those points, and let w be a given weight suspended from any point c; the weights p and q, which should be applied to the cord, at the extremities vertically below A and B, in order to produce equilibrium, may be thus determined. Through c draw the vertical line cz to represent the weight w, and draw zm, zn parallel to BC, AC, respectively: then, by mechanics, the lines cm, cn will respectively represent the strains in the directions AC, BC, and consequently the weights p and q, which, in the case of equilibrium, must be equivalent to those strains. Now since the angles AC Z, BCZ are known, representing them by a and b, the sine of the angle cm z may be expressed by sin. (a+b); and by trigonometry,

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therefore if the cord were attached to a fixed object at one end, as a or B, while capable of moving on a pulley at the other, and a weigh w were applied at any point c in its length, a weight q or p, found as above, would hold w in equilibrio.

Again, let the weights p, q, w, and the position of the pullies at A and B be given, the cord moving freely on the pullies and the weight w being capable of sliding by means of a ring along the cord; then the position of the parts AC, BC of the cord, when the system is in equilibrio, may be found in the following manner. Imagine mn to be the parallelogram of forces; then since cz, cm, zm may be represented respectively by the known quantities w, p, q, the values of the angles ACZ and czm or BCZ may be found by trigonometry. With these, by a geometrical construction, or otherwise, the required positions may be readily determined, since AC and BC make with horizontal lines, as ad, Be passing through A and B angles equal to the complements of a C Z, B CZ.

A cord suspended in a vertical plane between two fixed points and acted on by weights placed at different points in its length, is called a funicular polygon; and the form of the suspended cord being given, with the weight to be applied at one angular point as c, the weights at all the other angular points, in the case of equilibrium, may be found thus. Let A and B be angular points on the left and right of c, and having determined the strains represented by cm, cn by the parallelogram of forces at c, construct a parallelogram at a and another at B, having vertical lines passing through a and в for the directions of their diagonals, and having two sides of each coincident in direction with the adjacent sides of the funicular polygon, also making the sides (Ar and Bs) on AC and BC equal to to be suspended at a and c, in order to counteract the strains in a C and BC arising from the weight w at c. By forming parallelograms in a similar manner at the other angular points, the whole system may be in equilibrio. See 'Hutton's Tracts' (Tract 1, sect. 2, prop. i.).

FUNGIC ACID, an acid discovered by Braconnot in the juice of most fungi. This acid exists partly in a free state in the periza nigra, and combined with potash in the boletus juglandis; it may be obtained from the juice of either of these vegetables by evaporating it to the consistence of a syrup, and treating it with alcohol. The portion insoluble in alcohol is the fungate of potash, which is to be decomposedom and on respectively: then the diagonals will represent the weights by acetate of lead; the fungate of lead is to be decomposed by dilute sulphuric acid, or by hydro-sulphuric acid, by which the lead is separated in the state of sulphate or sulphuret, and the fungic acid is left in solution.

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