303 



four ,o,unceSi.<ftt' litnfif-watijr, .containing onl5';two grains three 

 quarters, take up, or detach, seven grains three quarters, 

 from a very compact calcukis, we may be led to suppose 

 this may arise from its action on the agglutinating me- 

 dium; its affinity to, and cneiigy on animal matter, being 

 so well known: and, if so, may we not expect something, 

 from its power on the mulberry calculus, our most formi- 

 dable enemy? For, though it cannot touch the oxalt of 

 lime, it may the cementing medium, with which it pecu- 

 liarly abounds. 



For the application of these established facts to useful 

 purposes, I must refer to my surgical friends, being all 

 now possessed of the necessary degree of chemical acquire- 

 ment; and .1 am happy to find this career already entered 

 on, :by my friend Mr. Crampton, Avho has favoured us with 

 an analysis of a pulmonary calculus, in the Philosophical 

 Transactions; and from whose professional, as well as sci- 

 entific talents, we have every thing to expect, in fuliillij^g 

 (even on this occasion) his duties as a teacher. -•-." -^il) 



Having now endeavoured to accomplish the chief object 

 of this Essay, which was, to. establish experimentally a more 

 dear and comprehensive view, of ihe nature of these ma- 

 ladies, and the remedies employed to combat them, than 

 we hitherto possessed; I should not have trespassed fur- 

 ther on the time of the Academy, were it not properly 

 suggested, by my j friend,!. Dr. Clarke, that it would be of 

 importance to ascertain, , liDsvi far the facts and notioi^, 

 brought forward in it, may stand confirmed or contradict- 

 ni Qq2 ed. 



