144 Proceedings of Philosophical Societies. [Feb. 



mention that Mr. Children does not seem to have, in all cases, 

 clearly distinguished between chlorides and dry muriates, and 

 the compounds of muriatic gas : thus, in p. 229, we are told that 

 100 parts of hydrochloric acid saturate 102 of lime. This must 

 be what was formerly called dry muriatic acid — a substance of 

 which Mr. Children will not admit the existence ; but it will be 

 observed in other cases, especially in the note at the bottom of 

 this page, that Mr. Children evidently refers to hydrochloric acid, 

 as a compound of hydrogen and chlorine. I confess I see no 

 advantage in using the term barya instead of harytay or even 

 harytes ; and if the term hydrochloric acid is to be admitted, I 

 cannot conceive on what grounds hydrosiilphuric acid for sulphu- 

 retted hydrogen is to be rejected. 



I had intended to have made various other references to the 

 useful additions contained in the Appendix ; but I have already 

 extended this article to so great a length that I must conclude 

 with observing, that this work contains in a moderate compass 

 what can scarcely be found without numerous references to a 

 variety of chemical authorities ; and I strongly recommend it as 

 worthy of the confidence and study of the young analyst. — Ed, 



Note by the Editor. — In the last number of the Annals, some 

 errors occurred in the analysis of the Edinburgh Pharmacopoeia. 



In mentioning the Oxidum Hydrargyri Cinereum, the quan- 

 tity of lime contained in the lime-water is much overrated. 

 Under common circumstances, the quantity directed by the 

 College cannot be considered as too large. 



Page 61, line 10 from the bottom, /or 42 read 32. 



2 from the bottom, for one-ninth part read one- 

 third part. 



Article XV. 



Proceedings of Philosophical Societies, 



ROYAL SOCIETY. 



In the last nnmher of the Annals, the address of Sir Humphry 

 Davy, on taking the chair as President, was given with a degree 

 of brevity so little suited to the occasion, that I am happy to be 

 able now to give more at length the heads of his discourse. 



The President commenced his address by repeating his thanks 

 to the Fellows of the Royal Society for the distinguished honour 

 which they had done him by placing him in the chair. He 

 stated his entire devotion to the cause of science, and assured 

 the Society that his feelings were deep, and would be permanent. 



