X. Constituents of Angelica or Changelica.
This plant, one of the greatest ornaments of cold countries, has
been analyzed by John. The following are the constituents which
he obtained from 300 parts of the dried plant.

Colourless and very volatile oil ..
Gum...

100.5
Inulia

12 Bitter extractive

37.5 Sharp tasted resin

20 A peculiar substance, soluble only in potash 22 Woody fibres ...

90 Water and loss

18

300
The earthy constituents were
Phospliate of lime. Phosphate of magnesia.
Phosphate of iron.

Silica?

ROBERT DICKINSON, Great Queen-street, London ; for certain

l improvements in the art of sadlery. Nov, 28, 1814.

ROBERT DICKINSON, Great Queen-street, London; for certain improvements in the manufacture of barrels and other packages made of iron or other metals. Dec. 10, 1814.

ROBERT SALMON, Woburn, Bedford ; for improved movements and combinations of wheels for working of cranes, mills, and all sorts of machinery, either portable or fixed. Dec. 10, 1814."

EDWARD GLOVER, Penton-place, Walworth, Surrey; for an apparatus for drawing or extracting bolts, nails, &c. and for various other useful purposes. Dec. 10, 1814.

HENRY JULIUS WINTER, Dover; for a method of giving effect to various operating processes. Dec. 12, 1814.

John Francis Wyatt, Furnival's Inn, engineer; for a new kind of bricks or blocks, one of which is particularly adapted for the fronts of houses and other buildings, giving to them the appearance of stone; another is applicable to a new method of bonding brick-work; also a new kind of hlocks or slabs for paving floors, and facing or lining walls, instead of ashler, which will resemble marble or stone, and which inay also be applied to steps or stairs, and other parts of buildings. Dec. 15, 1814.

JOSEPH C. Dyer, of Boston State, America, now residing in

of soap.

Camden Town, Middlesex; for certain additions to, and improve ments on, machinery to be made and applied in manufacturing cards for carding wool, cotton, silk, and tow, and other fibrous materials of the like description. Communicated to him partly by a foreigner residing abroad. Dec. 15, 1814.

JAMES SMITH, Newark-upon-Trent ; for a self-acting saslı fastening. Dec. 20, 1814.

WILLIAM EVERHARD, Baron von Doornich, Sun-street, Bishopgate-street, London; for improvements in the manufacture

Dec. 20, 1814. John VALLANCE, jud. Brighthelmstone ; for an apparatus and method of so constructing and securing brewers' vats or store-casks as to prevent the vat falling to pieces, or even breaking, though every one of the hoops on it should be broken asunder, and consequently preventing the liquor from being lost; and also for preventing the loss of liquor, even if a cock or all the cocks of the vat should be broken off. Dec. 20, 1814.

ROBERT DICKINSON, Great Queen-street, London ; for certain improvements in implements applicable to the purposes of navigation, namely, an improvement or improvements in the ship's nunbuoy and beacon-buoy. Dec. 20, 1814.

EDWARD JORDEN, Norwich, and WILLIAM Cooke; for an apparatus for the detection of depredators, which they denominate The Thieves' Alarum, Dec. 24, 1914.

FREDERICK KOENIG, Castle-street, Finsbury-square ; for certain further improvements in his method of printing by means of niachinery. Dec. 24, 1814.

John White, New Compton-street, Soho; for a method of making candles. Dec. 27, 1814. Joseph HARRIS, Shire-lane, Middlesex; for an improvement or

; improvements in the necessaries of clothing used for the military in general. Jan. 4, 1815.

JOHN CATTLER, Great Queen-street, Lincoln's Inn-fields; for certain improvements applicable to fire-places, stoves, &c. Jan.6, 1815.

CHRISTOPHER Dinl, Brewers-street, Golden-square ; for a method or means of making a mastic cement or composition, which he denominates Dihľs Mastic. Jan. 6, 1815.

JAMES COLLIER, Grosvenor-street West, Pimlico; for an apparatus, machine, or instrument, intended to be called a Creopyrite, by means of which power will be very economically obtained, and advantageously applied to the raising of water, and other useful purposes. Jan. 16, 1815.

FREDERICK Marquis de CHABANNS, Thayer-street, Manchestersquare ; for a method of extracting from fuel a greater quantity of calorie than hath bitherto been acquired, and applying it to the purpose of warming the room in which the operation is conducted, and also other rooms by one single fire. Jan. 16, 1815.

ARTICLE XV.

METEOROLOGICAL TABLE.

BAROMETER

TAERMOMETER.
Wind. Max. Min. Med. Max. Min. Med.

1815.

Evap. Rain,

29

35

.39 •10

5 •19

37

3d Mo.
Mar, 2 Var. 30•22 30·17 30.1951 48 35 4105
3N W 30 20130.17130•18549 37 43.0

W 30:17 30.11 30.140 54 41 | 47.5
5N W130:17 30.0630-115 55 40 | 47.5
61 W 30 17 29.90|30.035
7S W29.929•35129:625 52 38 45.0
8 W 129.502935 29425 52 32

42:0
ON W|29:46|29 1629-310 49

34 41'5 10 W 129.3229.16 29.240 48 38.5 11 S W29:48)29:32 29:400 47 30 38.5 12 S 29:32)28:86 29.090) 49

420 13N W729 52 28.86|29.190 52 39 45.5 14 S W29.96129•62 29:74049 32 40:5 15 Var. 129.96 29.68 29.820 55 46•0 16S W29:83/29 68.29.755 62 | 43 52.5 17 N W|29.97/29.8329.900| 62 42 52.0 18N W29.99 29 88/29:935) 55 46 50*5 19 N W 29:91 29•88 29.895 57 45

51.0 204 W 29.9 % 9 75294830 60 41 50*5 21/S W|29:75 29.5 : 29•645 59 45 520) 22 S W29:54 29.31429-425 61 45 53.0 23 W 29:42 29.1429.2801 59 40 49°5 24 S W29:42 29.2 9.335 57 40 48.5 255. W29-7029 2529.47 5 56 31 43'5 26 S W29.70 29:42|29:560 53 46 445 27 S W29:46 29:3+29 400 60 545 28 S W29.95 29:46: 9.705 60 44 52:0) 29 S 29.93 29:77 29•*50 62 43 52.5 30 S W29 9329 8829.905 59 43 51.0 31 Var. 29 88.29•6529-765 73 46

59.5

49

12 .26

:43

30-22 28 86129.672 73

29

:

:

REMARKS. Third Month. - 2. Small rain at intervals. 3. Misty morning: fine day. 4, 5. Cumulostratus. 6. Fine day: Cirri appeared, much elevated, and coloured at sun-set. 7. Fine morning : p. m. cloudy and windy, with some rain: night very stormy. 8. Windy, wet, a, m.: showers by inosculation in the evening. 9. a.m. Hoar frost : turbid sky: rain: p.m. fair. 10. Snow early, after which various modifications of cloud, ending in showers of rain and snow, p.m. 11. Hoar frost: Cirrostratus and Cumulostratus: p. m. Nimbi, with large bail. 12. Dull misty day; at night very stormy, with rain. 13. a.m. Cloudy, with a gale at S. W., and rain at intervals : p.m. several dense Nimbi, thunder, hail, and hard rain: much wind, with distant ligletning, at night. 14. Cirrostratus and haze: then Cirri, passing to dense Nimbi: gusts of wind, hail, and rain. 15. The barometer has risen, with an almost uniform motion, about an inch and a quarter in 36 hours; yet the air has not become clear: it should be observed, that there had been much previous depression: a wet forenoon, with a breeze at E.: p.m. Cir

ostratus : at night much wind. 16. a. m. High wind at S.W., with Cumulostratus : fair and pleasant. 17. a. m. Much dew: Cirrostratus, with Cirrocumulus: the light clouds after sun-set beautifully tinted with lake and purple. 18. After a few drops, the Cumulostratus prevailed, followed by rain in the night. 19. Some rain, a.m.: then Cumulostratus : and at evening Cirrostratus, with a lunar corona. 20. a.n. Dew: a light veil of Cirrostratus : at evening, the clouds passed to the N. 21. Cumulus, beneath Nimbiform Cirrus, both elevated : about five, p.m. during the approach of a squall, the wind was very noisy among the branches (now covered with opening buds), producing an almost vocal modulation of sound: as soon as the trees became wet, this was exchanged for the usual hoarse noise, resembling that of the sea-shore. It is probable that the former effect requires à peculiar sonorous vibration in the branches, the effect of close friction by the air, which the interposition of water does not permit to take place. The night was boisterous. 22. Much wind : showers: two strata of clond: borne very high, as for some days past. 23. Heavy squalls, with some hail in the showers : pim, a singular combination of clouds in the E. : it was a Nimbus, with Cumuli adhering and entering at the flanks, while a very lofty columnar Cumulus shot up through the midst of the crown, and this again was capped with a small Cirrostratus. 24. Various clouds : squally, p.m. 25. The same: a brisk evaporation: at sunset, Cumulus at a considerable height, inosculated with Cirrus above, after which two distinct Nimbi in the S., which went away eastward. 26. Driving showers: åt evening a luuar corona, followed by much wind and rain at intervals

:

A Memoir on. Iodine. By M. Gay-Lussac.

(Continued from p. 302.)

Hydriodate of Zinc. This salt is easily obtained by putting iode into water with an excess of zinc, and favouring their action by heat, as I have already explained. I have frequently attempted, but always without success, to make this salt crystallize, because it is extremely deliquescent. Heat first deprives-it of its water, then melts it, and sublimes it in fine prismatic crystals, similar to those obtained when antimony is oxidized. It is not decomposed by this operation, if performed in close vessels ; but if air be admitted, iodine is disengaged, and oxide of zinc remains. When this hydriodate is dried, it does not differ from ioduret of zinc.

By taking the mean of three experiments, differing very little from each other, I find that ioduret of zinc is composed of Iodine.

100
Zinc...

26•225
Consequently the hydriodate is composed of
Acid ....

100
Oxide of zinc

32-352 When a solution of hydriodate of potash or soda is mixed with a solution of metallic oxides, no precipitate is obtained with those of manganese; nickel, and cobalt, which proves that the hydriodates of these metals are soluble. Perhaps we may say that all the come VOL. V. No VI.

2 C