184- Dr. T. Anderson on the Products of the 



paper, extremely soluble in water, and slightly deliquescent 

 in moist air. 



Nitrate of ' Petinine. — The solution of petinine in nitric acid, 

 evaporated to dryness, and gently heated on the sand-bath, 

 gives a sublimate of the nitrate in fine woolly crystals. 



Hydrochlorate of Petinine. — Hydrochloric acid combines 

 with dry petinine, with the evolution of much heat, and the 

 formation of a salt which is extremely soluble in water, and 

 sublimes in fine needle-shaped crystals. 



Chloride of Platinum and Petinine. — If bichloride of plati- 

 num be added to a dilute solution of hydrochlorate of petinine, 

 the salt formed remains in solution ; but when both substances 

 are concentrated, it falls as a pale yellow precipitate, which 

 was purified by crystallization from hot water. On cooling, 

 the fluid, if sufficiently concentrated, becomes entirely filled 

 with exceedingly beautiful golden-yellow plates, resembling 

 those of crystallized iodide of lead. It is pretty soluble in cold 

 water, extremely so in hot, and is not decomposed by boiling 

 the solution. It is also soluble in alcohol. 



{9-552 grains of chloride of platinum and petinine gave 

 5-930 ... carbonic acid, and 

 3-593 ... water. 

 By three determinations of platinum, the details of which 

 have been already given, the mean per-centage of platinum 

 was found to be = 35-4-6. 



These results correspond with the formula C 8 H 10 N, H CI, 

 Ft CL. 



100*00 34-74-*9 



Chloride of Mercury and Petinine. — A solution of petinine 

 in water, added to a solution of corrosive sublimate, gives a 

 white precipitate, which dissolves in a considerable quantity 

 of hot water, from which it is again deposited in crystals. It 

 is much more soluble in alchohol; and the boiling solution 

 gives a deposit of beautiful silvery plates on cooling. It is 

 decomposed by boiling its watery solution, petinine being 

 driven off, and a white powder deposited. It is readily soluble 

 in the cold in dilute hydrochloric acid, probably with the for- 

 mation of another double salt. 



