a 
420 Scientific Intelligence. 
peg quantity.— Comptes Rendus, xviii, pp. 183, 259, 331, 392, 
5. 
€,H,+N,=2€NH. 
The reaction in this case begins rapidly but soon slackens. 
definite volume of acetylene may be made to disappear com- 
pecy by Easing s drop of a solution of potash into the vessel 
re passing t. 
then absorbed as 
present. The effect of eyanhydric acid in preventing the action in 
this case is due to the fact that a mixture of cyanhydric acid and 
hy: en gives under the influence of the stream of sparks ane 
react i 
PP ps On the Ammonium-amalgam.—Lanxvour has made a series 
experiments to ascertain the composition of the ammonium 
amalgam. It was prepared from a solution of ammonic chlorid by 
_ three minutes’ passa of the spark suffices to give the reaction due 
to the formatio of = oe g cay Comptes Rendus, lxvil, 1141. 
Ww. 
