^00 Natural History. 



their respective works, considerable talents as hy- 

 dro-anaiysts, and gave much valuable informatioil 

 to the world. These were followed by the excel- 

 lent treatises of Fourcroy, on the waters of Eng- 

 hien; of Klahroth, on the waters of Carlsbad; 

 and of Black, on the waters of Iceland. In the 

 experiments of these distinguished philosophers 

 new and more accurate tests are exhibited ; seve- 

 ral improvements in the application of those be- 

 fore knowm are communicated; and methods un- 

 folded of determining with precision the separate 

 quantities of inseparable substances. Next ap- 

 peared the publications of Drs. Pearson and Gar- 

 net, and Mr. Lambe, of Great-Britain, who, with 

 great accuracy, analysed some of the mineral wa- 

 ters of their own country, and gave important in- 

 formation respecting them. In the same branches 

 of mineralogical inquiry, the works of Gren, 

 Westrumb, and Kirwan, are also exceedingly 

 valuable ; especially that of the last-named gentle- 

 men, who, in a tract singularly comprehensive, 

 and abounding with instruction, has given a rich 

 amount of principle, experiment, and authority^ 

 on this interesting subject.* The respectable pub- 

 lications of Drs. Munro, Falconer, and Saun- 

 ders, are also entitled to notice, in recounting the 

 names of those who have thrown light on the in- 

 quiry concerning mineral waters. By the labours 

 of these, and many other philosophers, discoveries 

 have been made, concerning the composition and 

 medical powers of mineral waters, in almost every 

 part of the world, extremely useful to the inter-- 

 ests both of science and humanity. 



k Essay on the Analysis of Mineral Heaters, by RlCIIARD KiRWAN, Es^ 

 F. R. S. &c. 8vo. 1799. 



