1862.] 11 



to a deep-red liquid which, on cooling, solidifies to an indistinctly 

 crystalline mass of lighter colour. Leucaniline is anhydrous. The 

 analysis of the substance, dried in vacuo, and at 100, has given 

 results which correspond to the formula 



C JO H 21 N 3 . 



This formula has been verified by the examination of the chloride 

 already mentioned, of a splendidly crystallized platinum-salt, and, 

 lastly, of the nitrate, which may be likewise obtained in good 

 crystals. 



Hydrochlorate of Leucaniline. The preparation of this compound 

 has been mentioned. It is triacid, and retains, when dried in vacuo, 

 one equivalent of water, its formula being 



C 20 H 21 N 3 ,3HC1,H 2 0. 



The salt cannot be dried at 100, at all events in air; but the 

 water may be expelled, although with great difficulty, by exposing 

 the salt for a considerable length of time to 100 in a current of 

 hydrogen. I have endeavoured to convert this compound into a salt 

 with less acid by boiling the solution with an excess of leucaniline, 

 but without result. The boiling solution deposits, on cooling, beauti- 

 ful crystals of the base, the triacid salt remaining in solution. 



Platinum-salt of Leucaniline. On adding dichloride of platinum 

 to a moderately concentrated, gently warmed solution of the chloride, 

 a splendid bright orange-yellow platinum-salt separates, on cooling, 

 in well-formed prisms, generally aggregated to triangular stars. The 

 salt is difficultly soluble in cold water ; boiling water decomposes it. 

 At 100 this salt retains one equivalent of water, which can be ex- 

 pelled, although with difficulty, at higher temperatures. Numerous 

 analyses of this beautiful compound have established the formula 

 C 20 H 2l N 3| 3HC1, 3PtCl a -t- H 3 O. 



Nitrate of Leucaniline. Well-formed white needles, soluble in 

 water and alcohol, insoluble in ether. The salt is rather difficultly 

 soluble in nitric acid. When dried in vacuo this salt contains 

 C 20 II 21 N 3 ,3HN0 3 + II 2 0. 



I have not succeeded in separating the water of crystallization, the 

 salt being decomposed at 100. 



The salts of leucaniline are, in general, well crystallized. They 

 are all very soluble in water, and precipitated from the aqueous solu- 



