The mixture, while boiling hot, is to be decomposed by a slight excess of muriatic acid, and the boiling continued till all the chlorine is driven off. On the cooling of the liquid the benzoic acid is deposited in crystals, which are but very slightly colored, the greater portion of the coloring matter having been removed by the chlorine. The crystals, however, still retain some resinous matter, from which impurity they may be readily freed by being once or twice dissolved in a very small quantity of boiling water and recrystalized. A little puirified animal charcoal may also be advantageously employed for this purpose.

Lond. Edin. & Dublin Philos. Mag.

On the Quantities of Rain received in gauges at unequal Elevations from the Ground. By Prof. Paillips.

PHILLIPS The author, referring to three Reports which he had already presented, observed that the results arrived at, on York Minster, on the Yorkshire Museum, and on the ground at York, for three years, appeared to require no repetition, and that the reasoning on the results having been generally accepted, he should have thought it unnecessary to recall attention to the subject, unless he had some new facts to communicate. On duly estimating the force of the objections which had been, or might have beer, urged against the former experiments, such as the influence of local eddies and currents of wind about the Minster and Museum, and such buildings generally, Prof. Phillips resolved to establish a registration of ganges raised into the open air, to various heights, independent of buildings. He had carried on trials of this kind at intervals for more than five years, and after using globular gauges, and various modes of measuring the rain collected, he had finally employed for the last two years, funnel gauges, emptying themselves into reservoirs placed in the ground. Thus some particular difficulties were obviated, and a consistent tally of results obtained. In 1813, from January 9 to October 14, he had obtained registrations of the gauges almost continuously, and in 1844, a similar series from January 1 to September 2, was recorded for him by Mr. Cooke. The gauges are five in number, at 12, 3, 6, 12, and 24 French feet above the ground. The registration for the two periods are as under:

1813.
18.14.

Sum.
Inches.

Inches. Inches.
24
14.618
9.540

24.158
12
15.419 10.620

26.039
6
15.519 10.640

26.189
3
15.608 10.690

26.298
12 15.619 10.940

26.559 On these facts the author forbore to comment, having the intention to vary the experiments.

The EARL FITZWILLIAM observed, that although the quantities collected in the several gauges differed somewhat for the two years, yet it was remarkable that the proportions were much the same.

Proc. British Assoc.—London Athenæum.

On Simultaneous Burometrical Registration in the North of Eng.

land. By Prof. Phillips. Following out a limited district in the plans of contemporaneous hourly registration, which had been prosecuted by Sir J. Herschel and M. Quetelet, for larger areas, the author found the means to combine observations on the barometer, attached thermometer and direction of wind, for twenty-four hours in each month, at nine stations in the north of England: viz. Kendal, Shields, Whitby, Scarborough, Hull, York, Sheffield, Birmingham, Manchester. The observations of five of these stations for six months, had been approximately discussed, viz. those of Shields, Hull, York, Sheffield, and Birmingham, and the results projected in diagrams. They showed, 1. the remarkable general accordance in the forming of the contemporaneous curves at all the stations. 2. The various limits of the deviations from uniformity, never amounting at any two stations to above onetwentieth of an inch. 3. The passage of waves of greater or less pressure in directions nearly corresponding to the path of the wind at the time, and with velocities which appear proportioned to the general movement of the atmosphere at the time, viz. twenty to forty miles an hour. (The author announced a further communication on this subject in 1845.)

Ibid.

Transit of Mercury.

TO THE COMMITTEE ON PUBLICATIONS OF THE JOURNAL OF THE FRANKLIN INSTITUTE.

Burlington, V., May 26, 1845. Gentlemen,-I attempted ascertaining the time of the late transit at this place as accurately as my imperfect means would allow. I ascertained the time of my watch on that day by eleven pairs of equal altitudes, corrected for the change of declination; none of which gave the time more than four or five seconds from the mean, and the greater part gave it within two seconds, although it was very windy. My telescope did not authorize me to notice the external contacts; the internal resulted as given below. I had no micrometer to estimate the diameter of the planet, or its distance from the limb. Internal contact, beginning 11 h. 30 m. 11 s. A. M., mean time. Do. do. ending 5 53 56 P. M., do.

Yours, respectsully, JAJES A. DEAN.

n

66

ERRATA.
Page 206, from top 8th line, for "make" read “making."
from bottom 19th line, for 7x-hn? read rx-hn'
17th "

(n+1+n?]) read (n+1+mal)
210, from top 10th line, for 1.4433 read 1.4324

.6369

.6566
211,

8th "
6.04636 “

6.04369
13th
.4916

.4416
6 from bottom 13th 4,619:1.55 · 4.616:1.154

5th
.186

.116
1 st
.167

.133

12th "

66

LIST OF AMERICAN Patents, with REMARKS, &c.

64

ib.

do.

October, 1841.

PAGE.
1. Combing and preparing wool, flax, &c. Francis A. Calvert,

63
2. Pump for raising liquids,

Henry Rogers,
3. Press for separating elaine and stearine, Richard Jones,

65
4. Floating Jry dock,

D. Dodge & P. Burgess,

ib.
5. Improvement in mills,

Josiah Platt,

66
6. Increasing friction wheels, on rail roads, Elisha Tolles,

ib.
7. Lightning conductors,

Wm. A. Orcut,

ib.
8. Blinds for borse bridles, .

John G. Tibbets,

67
9. Support for copy books in writing, William Davison,
10. Art of writing,

do.

ib.
11. Casting butt and other hinges, .

Thomas Shepherd,

68
12. Making splints for brooms,

Lyman Gleason,

69
13. Endless chain buckets,

John Dution,

ib.
14. Smut mill,

Lewis Gieeve,

ib.
15. Propelling vessels,

Daniel Fitzgerald,

70
16. Building vessels,

Joseph Francis,

ib.
17. Sub-marine gun boat,

Daniel Fitzgerald,

ib.
18. Doubling the motion of a crank shaft, . Charles Johnson,

71
19. Making lead pipes,

G. N. & B. Tatham,

72
20. Ferules for canes,

Jonathan Buil,

ib.
21. Valves in steam engines,

William Gurlin,

ib.
22. Wire heddles,

A. Howe & S. S. Grannis,

94
23. Spiral water wheel,

John G. Gerretson,

95
24. Parlor stove,

Joseph Feinour, Jr.,

ib.
25. Rotary steam engine,

L. A. Stewart,

96
26. Planting seeds,

Joseph Jones,

97
27. Hydraulic and pneumatic cock,

John Lee Chapman,

ib.
23. Improvement in spinning machines, . Richard Roberts,

98
29. Boiler or caldion,

Lansing E. Hopkins, ·

ib.
30. Pneumatic springs for railway cars, Levi Bissell,

99
31. Oven for cooking stoves,

Ransselaer D. Granger,

ib.
32. Pockeis for garments,

Daniel Harrington,

ib.
33. Couking range,

N. P. Kingsley,

ib.
34. Condenser for carding engine,

Levi L. Gowdy,

100
35. Forming brick,

Charles G. Brown,

ib.
36. Self oiling bush for mills,

George M. Copeland,

101
37. Preventing waste from carding machine, Joseph Monroe,

102
38. Jaws of bench vices,

William Sim,

ib.
39. Railroad cars for curves,

P. G. Gardiner, assignee of s.
Bullock,

ib.
40. Valves and pistons of pumps,

John Clark,

103
41. Steam boiler for culinary purposes, Solomon C. Riley,

ib.
42. Traveling trunks,

John Fitzgibbons,

ib.
43. Apparatus for counting coins,

P. B. Tyler, executor of R. Tyler, . 104
Improvements on Previous Patents.
Counter twist speeder,

Jesse Whitehead,

104

November, 1841.
1. Saw mills,

Pearson Crosby,
2. Safety box for rail road axles,

P. & W. C. Allison, .
3. Steam engine,

Joseph Frost,
4. Air tight stove,

Joseph C. Fisk,
5. Shears for cutting metals,

W. Bulkley & 0. M. Inman,
6. Making fabrics water proof,

Thomas B. Rogers,
7. Bedsteads

John P. Allen,
8. Saw mills,

F. Goodall & T. W. Harvey,
9. Cutting stone,

Thomas J. Carnell,
10. Action of piano fortes, .

Daniel A. Newhall
VOL. IX, 3RD SERIES. No. 6.-JUNE, 1845.

36

249
ib.
250

ib.
251
ib.
252
ib.
253
ib.

253
254

ib.
255

ib.
256
ik.
ib.
257
ib.
258
ib.
ib.
334

ib.
S35
ib.
ib.
336
ib.
337
ib.
ib.
338
ib.
ib.
ib.
339
ib.
ib.

ib.
389
ib.
ib.
390
ib.
391
ib.
392
ib.
ib.
393
ib.
394
ib.
ib.

395

44