INDEX. 261
PAGE
Valence electrons 13
Valencies, principal and secondary 141
van't Hoff, J. H , 55
Vapor tension analysis 164, 190
Waage, P 53
Washing precipitates 5, 136
Water, detection of traces of 145
of constitution 189
Werner, A 141, 155, 166, 180
Williamson's violet '. 93
Winkler, Cl 58
Wohler, F , 63, 96
Yttrium earths 239
Ziervogel process 123
Zinc ethyl 214
Zircon gold purple 49
oxide, colloidal 47