272 METHODS OF ANALYSIS. 



Page. 



Vanillin in vanilla extracts 156-158 



Vegetable colors x 199 



Vegetables, canned ! 60-63 



physical examination 60 



soaked, examination 63 



Villavecchia test for sesame oil 145 



Vinegar 102-105 



adulterants detection 105 



Volhard method, ch'lorin in inorganic plant constituents 23 



Volumetric, optional method, phosphoric acid in fertilizers 4 



Water, added, detection in milk, by Zeiss refractometer 12C 



Waxes, detection in coffee ' 152 



Wiley method, determination of melting points of fats 133 



Wine 83-89 



adulterants, detection 88-89 



coal-tar colors detection 191 



extract, specific gravity table 218-220 



sulphurous acid 188 



Winton method, solids in coffee 153 



Wolff method, tartaric acid 175 



Wool dyeing for detection of artificial colors 190-191 



Wort, beer, extract and specific gravity 90 



specific gravity and percentage, table 209-217 



Yellow, Martius or naphthalene, detection 193 



Zeiss butyro-refractometer, refractive index of oils and fats 132 



refractometer method, detection of added water in milk 120 



Zinc dust for use in nitrogen determination 5 



Zinc-iron method, nitrogen in fertilizers 10 



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