180 Dr Latham, On the Conversion of [Feb. 6, 



Oxidised, the alcohol is turned into aldehyde — 



C 2 H 5 .HO + = CH 3 .CHO + H 2 



ethyl aldehyde 



The aldehyde combining with hydrocyanic acid is converted into 

 the cyanhydrin, and becomes a constituent of albumen; and glycol, 

 however formed, undergoes a similar transformation — 



CH 3 . CHO + HCN = CH 3 . CH |9^ 



etbidene cyanhydrin 

 and 



C 2 H 4 (HO) 2 + HCN = C 2 H 4 |^ + H 2 



glycol ethene cyanhydrin 



The cyanhydrin brought in contact with ammonia becomes an 

 amido-nitrile, or cyanamide — 



C 2 H 4 P + NE 3 = C 2 H 4 {^ + H 2 



ethene or ethidene 

 cyanamide 



and the nitrile by the action of acids or alkalies is converted into 

 an amido-acid, or alanine — 



alanine 



Again, we have the same series of changes for glycocine. In 

 the duodenum, it is converted into carbamate — 



^ TT fNH„ . J . . . x _.- (NEL 

 CH 2 1 " is transformed into (JO ^ n p-rV 



glycocine methyl carbamate 



or urethane 



co Ch +nh » = ch - ho + co £tt 



methyl alcohol urea 



CH 3 .HO + = H.CHO + H 2 



methyl aldehyde 



