Chemistry and Mineralogij — Geology, 367 



Dr Hare read a communication relating to the prevailing theories 

 of electricity ; he endeavoured to explain many interesting pheno- 

 mena attendant on the electric spark and the divergence of electri- 

 fied bodies. 



Dr Carpenter described a System of teaching the Blind to read, 

 similar to Mr Lucas's. 



Mr Hodgkinson read an Account of some Experiments, at the 

 request of the Association, to determine the comparative Strength 

 and other Properties of Iron, made with the hot and cold blast, at 

 the Carron, Devon, and BuflFrey Works, under similar circumstan- 

 ces. — In the Carron and Buffrey works, the strength was rather in 

 favour of the cold blast. In the Devon iron the advantage was 

 much in favour of the hot blast ; but it is proper to remark, that the 

 cold blast iron was very white in the break, and that from the hot 

 was grey. 



Section B. — Chemistry and Mineralogy. 



The following papers were read : — Some improvements on the 

 Voltaic Battery. By Mr Crosse. — Observations on Atmospheric 

 Electricity. By Mr Crosse. — On a new compound found during 

 the destructive distillation of Wood. By Mr Scanlaw. — On a pe- 

 culiar compound of Carbon and Potassium. By Professor E. 

 Davey. — On a new gaseous Bicarburet of Hydrogen. By Profes- 

 sor E. Davey. — On the conducting power of Iodine. By Dr Inglis. 



— On Fluorine. By Mr Knox On detecting the Strength of 



Spirits, by diluting with Water. By Mr Black. — Communication 

 on the Aurora Borealis. By Dr Traill. 



Section C — Geology and Geography. 



jSco Hivulets in the Island of Cephalonia. — Lord Nugent read a 

 communication respecting some sea rivulets in the Island of Cepha- 

 lonia. The water, he said, entered the earth through fissures in 

 the rock on the seashore, and it was not discovered where it 

 emerged, but it was supposed to flow into the sea, on the side of 

 the island nearest Ithaca. Some observations were made by the 

 Marquis of Northampton, Mr Murchison, Dr Daubeny, and the 

 Chairman, but no solution of the problem, was given. 



Tertiary Deposits. — Mr Charles worth read an elaborate paper on 

 some fallacies in Mr Lyell's test in determining the ages of tertiary 



b2 



