408 



INDEX 



Vitality in culture of avian 



tubercle bacilli . . 293 



Voges-Proskauer reaction 238, 355 

 Volatile soluble fatty acids in 



butter fat . . ... 88 



Volume and density of gases 14 



Volumetric analysis . . . . 5 



requirements for . . 6 



methods . . . . . . 6 



Von Pirquet's test . . . . 280 



Wanklyn's method for or- 

 ganic matter in water 



39, 40 



Wassermann reaction . . 328 



test . . . . 205, 209 



value of . . . . 209 

 Water analysis . . . . 19 



albuminoid ammonia 43 



arsenic, presence of . . 26 



bacteriological exam- 

 ination . . 21, 345 



bicarbonates and car- 

 bonates . . . . 31 



chemical examination 



20, 22 



chlorine . . . . 24 



collection of sample 21, 345 



dissolved oxygen . . 33 



solids . . . . 22 



estimation of amount 



of copper in . . . . 28 



of iron in . . 28 



lead in 27 



zinc in 29 



fixed solids . . . . 23 



Forschammer process, 



for organic matter 39, 44 

 Frankland's method, 



for organic matter . . 38 



free carbon dioxide . . 30 



and bicarbonate 32 



and saline ammonia 40 



hardness, definition of 34 



determination of.. 35 



interpretation of results 53 



Kjeldahl's process, for 



organic matter 40, 46 

 lime and magnesia 29, 30 



phosphates . . 29, 30 



physical examination 20, 22 



poisonous metals . . 25 



presence of lead, copper, 



iron or zinc . . . . 25 

 qualitative tests for 



poisonous metals . . 25 

 quantitative tests for 



poisonous metals . . 26 

 reaction . . . . 22 



specimen analyses . . 55 



sulphates . . 29, 30 



sulphuretted hydrogen 34 



temporary and remov- 

 able hardness.. .. 37 



tin, presence of . . 26 



total hardness 37, 38 



solids . . . . 22 



Wanklyn's method for 



organic matter 39, 40 

 zinc, presence of . . 26 



bacteria found in. . .. 345 



bacteriological examina- 



tion of . . . . 345 



methods of examination 346 



sampling . . . . 345 



standards . . . . 346 



in butter 88 



of crystallization . . . . 8 



dilutions . . . . . . 346 



enumeration of bacteria in 349 



ground . . . . . 72 



isolation of B. enteritidis 



sporogenes . . . . 360 

 typhosus . . . . 360 



sp. choleras . . . . 324 



subsoil . . . . . . 72 



tables of bacteria in 350, 362 

 Watercloset towns sewage, 



analysis of . . . . 56 



Watercress . . . . . . 376 



Weigert's staining methods 



166, 167 

 Weighing with the chemical 



balance . . . . 12 



and measuring, rules as to 12 

 Weights, atomic, table of . . 15 

 Werner -Schmidt process for 



fat in milk . . . . 74 



