MOLECULAR CONSTITUTION OF THE ORGANIC BASES. 
389 
was passed at the temperature of boiling water. On weighing the residue, the amount 
of water retained by the oxide was given. The results obtained in this way, although 
not perfectly accurate on account of the oxide yielding a small quantity of triamyla- 
mine even at 100 °, before the last traces of water of crystallization are expelled, 
nevertheless leave but little doubt respecting the nature of the residue. In an ex- 
periment of this kind 
rOOlO grm. of iodide of tetramylammonium left 0*8000 grm. of residue. 
This corresponds to 75'43 per cent. ; if the viscid residue had been the pure mono- 
hydrated oxide I should have found 74*10 per cent. 
I hope to repeat this experiment at a lower temperature, and also to determine the 
amount of water of crystallization in the crystallized compound ; the latter is soon 
reproduced on adding again a moderate quantity of water to the viscid hydrate. 
I have just now mentioned that the oxide, when heated in the water-bath, yields a 
small quantity of triamylamine. At a higher temperature this reaction proceeds with 
perfect regularity ; an inflammable carbohydrogen being disengaged, together with 
the base. There can be scarcely any doubt that the former is amylene. This sub- 
stance boils at a rather low temperature, 39°, and was therefore partly collected as 
gas. Another portion however dissolved in the triamylamine, from which it was ex- 
pelled by ebullition after the base had been fixed by addition of hydrochloric acid. 
The analysis of the triamylamine obtained in this reaction has been mentioned at 
page 386. Hence the decomposition of oxide of tetramylammonium is perfectly ana- 
logous to that of its analogues in the ethyl-series, and is represented by the equation 
Cio 
C H i 
!>N0, HO=2HOr|- Cio N-bC^o 
CioH 
11 
^10 Hjij 
.Cjo 
Oxide of tetramylammonium is distinguished by forming crystalline salts of re- 
markable beauty. The sulphate crystallizes in long hair-like filaments, the nitrate 
in needles, the oxalate in splendid large perfectly defined plates, of a very bitter 
taste, and extremely deliquescent. The chloride crystallizes in leaves with palm- 
like ramifications ; it is likewise deliquescent, but less so than the preceding salt. 
The solution of the chloride yields with bichloride of platinum a pale-yellow curdy 
precipitate, which gradually solidifies into beautiful orange-yellow needles. 
On analysis the following results were obtained : — 
0*2420 grm. of platinum-salt gave 0*0475 grm. of platinum. 
The theoretical numbers of the formula 
C 40 H 44 N Cl, Pt Cl 2 = < 
■Cio iiu 
^10 
^10 Hjj 
Cio H4 i_ 
Cl, Pt CI 2 
3 E 
MDCCCLI. 
