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Proceedings of the Royal Society of Edinburgh. 

 (Continued from vol. xxxiii.p. 197.) 



January 17. 1842. — Dr Abercrombie, V. P. in the Chair. 



1. On tlie Identity of the Animal Matters which form the 



Basis of the Animal Fkiids and Solids. By James Stark, 

 M.D., F.R.C. Phys. 



2. On the Parasitic Fnngi fonnd growing on the Bodies of 



Living Animals. By John Hughes Bennett, M.D. Com- 

 municated by Dr Graham. Part I. 



February 7. — Sir T. M. Brisbane, Bart., President in the 

 Chair. 



1. On the Parasitic Fungi found growing on the Bodies of 



Living Animals. By John Hughes Bennett, M D. Com- 

 municated by Dr Graham. Part H. 



2. On the Action of Water on Lead. By Dr Christison. 



The author, after hiiefly stating the results of his Experimental 

 Inquiries, published on this subject in 1829, proceeded to describe 

 two instances which had recently come under his notice, illustrative 

 of the solvent action of certain terrestrial waters on lead, and of the 

 daufrer of using this metal for conducting water in pipes, unless with 

 a due regard to the circumstances which promote or prevent its cor- 

 roding property. In one instance, the water of a spring, conveyed 

 in a lead-pipe from a distance of three quarters of a mile, was found 

 to act so powerfully on the lead, that in a short time the cistern in 

 which the water was collected became covered with loose carbonate of 

 lead, and the metal could easily bo detected in the state of oxide dis- 

 solved in the water. In this case, the action was found to depend 

 on the spring being of extraordinary purity, its total saline ingre- 

 dients being only a 22,000th part. In the other instance, water 

 conveyed half a mile in a lead pipe, was impregnated exactly in the 

 same way, and with the very same phenomena, — but with tlie addi- 

 tional circumstance, that, in consequence of the impregnation not 

 having been detected in time, as in the previous ca.se, the disease. 



