C. G. Williams on Organic Substances. © 331 
2(0,H,,) = 5(C,H,) + 5H,. 
——— ————d 
Amylene. Acetylene. 
0H, +H, = 0,8, 
yaa 
Acetylene. Ethylene. 
C,H, + H,S80, = i C,H,80, 
a 
Ethylene. Ethyl-sulphuric acid. 
H, C,H,SO, + H,O = 0,H,O + H,S0, 
Ethyl-sulphuric acid. “Mechel. 
. The synthesis of succinic acid from acetylene was next shown 
I accordance with the annexed equations, omitting the synthe- 
“is of ethylene, which has been already given:— 
C,H, + Br, = C,H,Br, 
KS 
Ethylene. thylenic dibromid. 
0,H,Br, + 2(KCN) = C,H,(CN), + 2KBr) 
i a x aes 
Sezenic Potassic Behylent 
ry H ON . cyanid., cyanid. N 
v:H\(CN), + 2(KHO) + 2(H,0) = 0.H,K,0, +2(NH); 
Ethylenic dicyanid. Potassic succinat 
ey mode of effecting the synthesis of succinic acid is due 
= Ms researches of Maxwell Simpson. : 
of : beautiful appearance of succinic acid under the influence 
The. zed light was shown by the aid of the electric lamp- 
gests used had been artificially prepared. eg 
__, ae speaker then proceeded to show that the synthesis 0 
— lat acid was a direct step te that of tartaric acl This 
“tter reaction is due to the researches of Perkin and Dupp@. 
