228 DR T. ANDERSON ON THE PRODUCTS OF THE 
position of ethylopicoline differs from that of tetrethylammonium. According to 
Horraan, the latter base is entirely converted into triethylamine and olefiant gas; 
but ethylopicoline, even after long-continued boiling, gives an abundant residue 
on evaporation. The substance so obtained is amorphous, has an intense blood-red 
colour, and is a base forming a platinum salt insoluble in water. Although these 
experiments were made on a very small scale, and the slowness of the action 
rendered it impossible to say with certainty whether the decomposition was com- 
plete, this platinum compound was analysed, and the results were— 
8:550 ... carbonic acid, and 
5840 grains of the platinum salt gave 
2°390 ... water. 
{4 ‘555 grains of the platinum salt gave 
1652 =... platinum. 
Carbon, . ‘ ‘ , 39-92 
Hydrogen, : 4 : 454 
Platinum, i : 21-86 
From a single analysis such as this, it is impossible to deduce a formula; but 
it is obvious that a base, of much higher atomic weight than ethylopicoline has 
been produced, the farther examination of which must be deferred to a future 
paper, and which will probably lead to interesting results. 
Action of Iodide of Ethyl on Pyridine. 
When pyridine is treated with iodide of ethyl, the action, as might be ex- 
pected, is in all respects similar to that which occurs with picoline. A homo- 
geneous mixture is first formed, and then, on gently warming, the action takes 
place, with the evolution of much heat, and the hydriodate of ethylopyridine 
rises to the surface as an oily layer. The crystallization of this substance, as it 
cools, is an extremely beautiful phenomenon. Minute rhombs make their ap- 
pearance here and there in the viscid fluid, where they increase in size so rapidly 
that they may actually be seen to grow; and in a successful operation they 
sometimes increase to the size of from a quarter to three-eighths of an inch in 
diameter in the course of half an hour. By and by the crystals come into contact 
with one another, and the fluid is converted into a solid crystalline mass. The 
crystals are removed from the tube, pressed in folds of filtering paper, and crys- 
tallized from a mixture of absolute alcohol and ether. They then form fine sil- 
very plates, highly soluble in water, and slightly deliquescent; in alcohol and 
ether they are also extremely soluble, though less so than in water. With re- 
agents, their behaviour is so exactly the same as that of the ethylopicoline salts, 
that it is unnecessary to enter into any details. By analysis the following results 
were obtained :— 
