Consequently an equal weight of strontites with the sugai- 

 employed is capable of being- dissolved at the temperature 

 of 212 degrees; and of being retained in solution by the 

 sugar at 50 de^rpes of Fahrenheit. On exposiui^ the crys- 

 tals, which had fallen down during the cooling of the liquid 

 to t})e air of the atmosphere, tjiey attracted carbonic acid 

 and effloresced. . ' • 



Chemical pro- The solution of strontites in ay^ar Is of a fine white wine 

 **^'^^' colour, and like that of lime has a peculiar caustic smell. 



This earth is precipitated by caustic and carbonated jfotash 

 and soda; also by the carbonic, citric, tartarous, sulphuric, 

 and oxalic acjds. And it is decomposed, by compound af- 

 ^nity, by the carbonates of potash and soda-; also by the 

 citrate, tartrite, and oxalate of potash. 

 Sugar and ba- Judging from the greater solifbiiity of strontites when 

 fyies. compared with lime in the saccharine solution, that this 



flight pvoceed from its superior affinity for this substance ; 

 it was thought, that a greater proportion of barytes would 

 "be dissolved than of either of the former earths. Two 

 ounces of the carbonate of barytes were taken, and treated 

 in the same manner as has been narrated in the preparation 

 of the strontian earth, by ex;pelling the carbonic acid by 

 dilute nitric acid, evaporating to dryness, and then igniting 

 the mixture until the nitric acid was destroyed. The pre- 

 pared earth was put into the saccharine solution in the cold 

 state, and frequently agitated ; the liquid assumed a dull 

 greenish appearance, and the smell of carbonated hidrogen 

 gas was sensibly felt. After 24 hours rest the solution had los$ 

 its green colour, and was of the same colour as the original 

 Nonedissolved solution of sugar; and a black matter was found precipitated 

 fold, to the bottom of the glass jar. . On trying the specific gra- 



vity of the solution it was not increased. The liquid was 

 then taken apd boiled on a fre^ih portion of the barytic earth, 

 and bat little *'"^" fil^i'^d ; on being cooled to the temperature of 50 de- 

 hot, gi'ees, the specific gravity was 



Solution of silgar 1040 



Barytes in solution 6 



104<i 

 From 



