834 Proceedings of the British Association. 



Upon watering them with a solution of arsenious acid, he found 

 that they would bear it in larger proportions than was presupposed- 

 The injurious eflFects of arsenious acid on vegetation in the neigh- 

 bourhood of the copper-works of Bristol and Swansea was noticed 

 by Mr Rootsey ; and Mr Stevens mentioned the circumstance of the 

 trout in some streams of Cornwall having been destroyed by the 

 opening of some new mines in their neighbourhood, from which 

 arsenical compounds were discharged, though the vegetation did 

 not appear to be injured by them ; and it was further stated, that 

 horses were considerably injured, and rendered subject to a re- 

 markable disease, by the e£Pects of arsenical compounds in the same 

 districts. 



Section E. — Anatomy and Medicine, 



President, — Dr Roget. 



Vice-Presidents Dr Bright, Dr Macartney. 



Secretaries. — Dr Symonds, G. D. Fripp, Esq. 

 Dr O'Beirne read a Report of the Dublin Committee on the 

 pathology of the Nervous System. 



A short description of a case of Aneurism of the Arteria Inno- 

 jninata, furnished by Sir D. H. Dickson, was then read. 



Section F — Statistics. 



President — Sir Charles Lemon, Bart. 

 Vice-Presidents — H. Hallam, Esq., Dr Jerrard. 

 Secretaries — Rev. J, E. Bromby, C. B. Fripp, Esq., James Hey- 

 wood, Esq. 

 A very curious and interesting report was read, entitled, " A 

 t&w Statistical Facts, descriptive of the Former and Present State 

 of Glasgow," by James Cleland, LL. D. 



Section G. — Mechanical Science. 



President — Da vies Gilbert, Esq. 



Vice-Presidents — M. I. Brunel, Esq., John Robison, Esq. 



Secretaries — T. G. Bunt, fisq., G. T. Clark, Esq., William 



"West, Esq. 



The discussions were opened by some observations of Professor 

 Moseley on the theory of Locomotive Carriages. 



Dr Lardner next laid before the meeting many details in regard 



