332 Proceedings of the British Association. 
erystallization of vapor which takes place when the mass has risen a 
sufficient distance from the heated nucleus, the vapor itself, like that 
of our atmosphere being less susceptible of being directly heated by 
solar radiation ? 
Is there any other explanation than the latter, of the transparent 
invisible stratum, which often to a sensible extent surrounds the en- | 
velope and is Wi — by curved prolongations of the lateral 
portions of the tra 
Union College, ee Mais 25th, 1836. 
Arr. XXI.—Proceedings of the British Association at Bristol in 
August 1836.* 
From the Edinburgh New Philosophical Journal, Oct. 1836. 
GENERAL OFFICERS. 
President. —The Marquis of Lansdown; but owing to his una- 
idable arnetine, his place was taken by the Marquis of North- 
ice 
Vice a heaemen, W. D. Conybeare, F.R.S., James C. 
Prichard, M.D. F.R.S. J 
General Secretaries—Rev. William V. Harcourt, F.R.S., Fran- 
cis Bailly, F.R.S. 
Assistant General Secretary.—Prof. as vs of King’ s College. 
Treasurer.—John Taylor, Esq. F.R.S., 
LOCAL OFFICERS. 
| Raita ce: Bengough, Esq. 
_ Secretaries —Prof. Daubeny, V. F. Hovenden, Esq. 
Section A.—Maruemartican anp PuysicaL Science. 
President.—Rev. W. Whewell, F.R.S. 
Vice Presidents.—Sir D. Brewster, Sir W. R. Hamilton. 
Secretartes.—Prof, Forbes, W. S. Harris, Esq. F.R.S., F. W. 
Jerrard, Esq. 
The following Memoirs were read, and statements made, and 
more or less extensively discussed :—1, Notice regarding the pro- 
gress made in the construction of a lens of Rock-salt, by Sir D. 
Brewster. 2. Account of the recent tide observations made at the 
ie 
* Report prepared from accounts in Atheneum, Felix Farley’s Bristol Journal 
and private communications 
