281 

 .snoiJicqoicj ti'-foniffi;;;''! .id o) gnilnoooe i'l'f 



To four ounces of tlie, upne of a child, often depositing 

 gravel, on cooling, Avere a4de4- tpji drops of \.\\euqua kali 

 puri of the shops. After sevi^a . dayp, no sign of separa- 

 tion: some observable in the standard, after some hours. 



EXPERIMENT VIII. 



To four ounces of uri,i;\e',. w^re added three grains only 

 of crystallized carbonate :,qfi, potash, the purity of which 

 was ascertained by Dr. Perceval and myself; and contain- 

 ing, according to Mr. Kirwan, 1,23 grains of alkali. After 

 several days, no appearance of crystallized matter: some 

 in the standard, after forty-eight hours. 



EXPERIMENT IX. 



To the same quantity of urine, were added two grams 

 only of the same: with the like result. 



From the pure and carbonated, let us now proceed to ' 

 the super-carbonated and sub-carbonated states. 



EXPERIMENT X. 



To three ounces of jarine, in a well closed phial, was 

 added half an ounce of the aqua mephitica alkalina, pre- 

 pared 



