332 Proceedings of the British Association. 



crystallization 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 itself embraced by curved prolongations of the lateral 

 portions of the train ? 



Union College, Schenectady, Nov. 25th, 1836. 



Art. XXI. — Proceedings of the British Association at Bristolin 

 August 1836.* 



From the Edinburgh New Philosophical Journal, Oct. 1836. 

 GENERAL OFFICERS. 



President. — The Marquis of Lansdown ; but owing to his una- 

 voidable absence, his place was taken by the Marquis of North- 

 ampton. 



Vice Presidents. — Rev. W. D. Conybeare, F.R.S., James C. 

 Prichard, M.D. F.R.S. 



General Secretaries. — Rev. William V. Harcourt, F.R.S., Fran- 

 cis Bailly, F.R.S. 



Assistant General Secretary. — Prof. Phillips of King's College. 



Treasurer.— io\m Taylor, Esq. F.R.S., F.G.S. 



LOCAL OFFICERS. 



Treasurer. — George Bengough, Esq. 



Secretaries. — Prof. Daubeny, V. F. Hovenden, Esq. 



Section A. — Mathematical and Physical Science. 



President.— Rev. W. Whewell, F.R.S. 

 Vice Presidents. — Sir D. Brewster, Sir W. R. Hamilton. 

 Secretaries.— PvoL 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 



* Report prepared from accounts in Athenaeum, Felix Farley's Bristol Journal 

 and private communications. 



