C O M M E N T A T I O 



Tandem Berzelii sententiam confirmatam vidi, 

 cum statueret , coffeae nondum ustae decoctum Po- 

 tassa immixtum eadem ratione reagent! mutari ac- 

 si ipsum venenum adesset (i). Ammoniam loco 

 Potassae sumtam eadem gaudere facultate, insuper 

 mihi patuit. Quibus omnibus efficitur , prudenter 

 qum hocce reagente esse agendum illudque mi- 

 nus esse laudandum quam Hydrogenium sulphu- 

 ratum (2). 



S- 9- 



Nitras Argenti Ammoniacale. 



H u m e , deSnde Marcet et Roget pro rea- 

 gente indicaverunt nitras Argenti. Hume solution! 

 arsenicali addidit Potassam causticam (3) , cujus 



au- 



(1) 3 ahrcsbericht iiber die Fortschritte der physischen 

 fPissenschaften , ubers. von G m e 1 i n , Jahrg. III. Tub, 

 l8a4. Cf. S a r t o r i u s und M o n h e i m , 1. c. p. 66. 



(2) Quamvis B o s f o c k testetur : he has no hesitation 

 in giving it as his opinion , that the most conve- 

 nient the most delicate and the most decisive pro- 

 qess , is the one in which the green precipitate is formed 

 by the addition of the sulphate of Copper; cnjus ope Ar- 

 senicum detegit , quod 5? r 53 solutionis partem efficeret ! Ex 

 the Edinb* mcd. and surgic* Journ. V 170 and 174. in 

 Load. med. chirurgic. Transactions , Vol. II. p. i5g. 

 (third edit.} 



(3) Philosophic. Magaz. f. May 1809. Cf. Land, rned. 

 chirurgic* Transact, ibid. 



