299 



of the Academ}^ if I Avere not actuated by the sanguine 

 hope, of turning the attention of my surgical friends, to 

 the humane consideration of obviating, as much as pos- 

 sible, the most dangerous of operations, by the prudent^ 

 application of a few safe solvents, injected into th'e blad- 

 der. How far they may succeed, with calculi of thb uric 

 acid kind, may be already conjectured, fi'om the preceding 

 experiments : but with those of the next most frequent 

 occurrence, there is much less difficulty to encounter, and 

 every i*eason to hope for a speedy and safe result. The 

 ammoniaco-magnesian phosphat is partly soluble in water; 

 highly so, in the carbonic acid, (as we haVe already seen;) 

 and, consequently, more so, in the weakest possible acid 

 impregnations that can be devised: nothing more being 

 necessary, thaa the addition of as many drops only of 

 weak muriatic acid, as will scarce impart an acid taste. 

 But as precept should, in every instance, be as much as 

 possible assisted by experiment, I shall, for the encourage- 

 ment of the young practitioner, exhibit a few, on this very 

 soluble species, the more willingly, as he has no assistance 

 to expect from his professional books : these subjects being 

 only treated of in Philosophical Transactions, Memoires of 

 the National Institute, and a few other foreign chemical 

 publications, if we except Whyte's Treatise on Lime-water, 

 to which we would willingly refer him. 



EXPERIMENT 



