162 SUBJECT INDEX. 



PAGE 



Urea, decomposition of 5 



Value of isolated analyses 41 



Variation of B. coli 68 



Variations in cultural reactions 73 



Wakefield and Stoneham tap-water, bacteria in 10, 47 



Water, B. coli in different grades of 96 



in polluted and unpolluted 63 



bacteria, peculiar metabolism of 37 



, bacteriological analysis of 69 



, chemical composition, relation of bacteria to 37, 38 



, chemical examination of 1 10 



, complete bacteriological analysis 112 



, distribution of bacteria in 6 



purification 40 



supplies, sanitary inspection of 109 



Waters, bacteria in various classes of. 21 



, classification of 6 



Well, typhoid bacillus in, at Neumark 53 



at Rellingen 53 



water, bacteria in 42 



Wells, bacteria in 47 



Westerly tap-water, bacteria in 47 



Widal reaction 53 



Wood's Hole, bacteria in sea-water at 10 



Wurtz litmus lactose agar 59 



