Intelligence and. Miscellaneous Articles. 237 



grammes of extract of a pillular consistence : it had a weak smell of 

 opium. It was boiled in water with magnesia: the precipitate, washed 

 and dried, was treated with boiling alcohol, which dissolved the morphia, 

 and 30 grains were obtained. M. Fontenelle remarks I hat if these ex- 

 periments should be confirmed, it will prove the error of rejecting 

 poppy seeds when the capsules are employed for making decoctions. 

 — Journal de Chimie Medicate, July 1833. 



ANALYSIS OF THE BLUE ARSENIATE OF COPPER OF CORNWALL. 

 According to M. Wachmeister, the powder of this mineral is of an 

 olive-green colour : by gradual calcination it becomes of a pure blue 

 and loses half of its water; then losing the rest of its water it becomes 

 of a dark bottle-green colour. 



To analyse this mineral it was fused in a plaf.ina crucible with 

 three times its weight of carbonate of soda; washed with water, the 

 residue treated with muriatic acid, excess of ammonia precipitated 

 the iron and alumina, and dissolved the copper. The alkaline solu- 

 tion was saturated with muriatic acid : and the arsenic precipitated in 

 the state of sulphuret by sulphuretted hydrogen gas : after this car- 

 bonate of ammonia gave a precipitate of phosphate of alumina, which 

 was analysed by fusing with one part and a half of silica and six parts 

 of carbonate of soda, &c. The results of the analysis were 



Arsenic acid 20 - 79 



Phosphoric acid 3*61 



Oxide of copper 35*1 9 



iron 3-41 



Alumina 8*03 



Silica 4-04 



Quartz, silicate, &c 2-95 



Water 2224 



100-26 

 The iron is probably in the state of protoxide, and the alumina only 

 combined with water. — Annates des Mines, June 1833. 



ORIGIN OF AZOTE IN ANIMAL SUBSTANCES. 

 MM. Macaire and Marcet have ascertained that the chyle and 

 tbe blood of herbivorous and carnivorous animals are nearly of si- 

 milar composition : this fact seems to show that, whatever be the 

 nature of the food, animals, by means of their digestive powers, ex- 

 tract chyle of similar composition. The following was found to 

 be the composition of the chyle of the 



Dog. Horse. 



Carbon 55'2 55 % 



Oxygen 259 26-8 



Hydrogen 6*6 67 



Azote 11' 11' 



98-7 99'5 



