366 Royal Society, 



Mr. Carnuchael proposes to publish in the course of the 

 ensuing summer, the second edition of his Essay upon the 

 ^Effects of the Salts of Iron upon Cancer, with many addi- 

 tional cases, and several interesting practical observations 

 upon that disease. 



' Mr. Carmichael has received some communications from 

 practitioners, concerning their experience of those prepara- 

 tions, for which he begs to return his warmest thanks; and 

 he at the same time takes this opportunity of earnestly re- 

 questing such of the profession as have deemed the remedy 

 he recommended worthy of a trial, to inform him (addressed 

 to No. 3, Gardener's Place, Dublin,) of their experience of 

 its effects, before the end of June next, in order that he 

 may insert their observations in his Essay, and that thus the 

 merits of the remedy may be justly appreciated. 



LXIX. Froceedings of Learned Societies, 



ROYAL 50CIETV. 



April 28. — This society met after the Easter recess, the 

 president in the chair. A mathematical paper, by Doctor 

 Young, was read, on the motion of fluids in flexible tubes, 

 and the resistance of angular tubes to such fluids. A num- 

 ber of hydraulic experiments were performed ; but the re- 

 sult was not of a nature to be stated here. This paper was 

 merely designed as prefatory and introductory to this author's 

 next Croonian lecture on muscular motion. 



May 5. — A letter from Mr. Cadell, at Paris, to H. Davy, 

 Esq., secretary of the Royal Society, was read. In this letter 

 Mr. Cadell states, that the French chemists have success- 

 fully repeated Mr. Davy's experiments upon the decompo- 

 sition of the fixed alkalies ; and that they have found a re- 

 markable confirmation of his discovery in the action of 

 heated iron upon potash and soda. 



This chemical result has been obtained by Messrs. Gay 

 Lussac and Thenard. These gentlemen introduced potash 

 into the\)ottom of a gun-barrel bent in the form of an S : 

 iron filings filled the middle of it, which was strongly heated. 



By 



