INDEX. 103 



PAGE 



Trichlor-acetic acid 19 



Trichlor-methyl ester 19 



Trioxy-anthraquinone 55 



Trioxy-methy lene 6, 7, 8, 47 



Triphenyl-methane dyes 75 



Undecylenic acid 17 



Unsaturated acids 17, 42 



Unsaturated esters 39 



Unsaturated hydrocarbons 17, 33, 42 



Valeric acids 24, 48, 84, 85 



Valeric butyl ester. ...; , 24 



Valeric ethyl ester 34, 



Xanthogen supersulphide 48 



