192 
Water bath, 68 
collection of, for analysis, 115 
contamination of, by sewage, I15 
Welch's method for capsules, 31 
White acid, 55 
Whitney's method for blood, 161 
Widal reaction, 145, 149 
slide, 148, 149 
Wilson and Randolph's method for 
measuring bacteria, 163 
Wire, platinum, 14 
Wolfhiigel’s counting plate, 116, 
117 
INDEX. 
Wright's method for growing anaé- 
robes, 79 
YEASTS, 165, 166 
cultures of, 166 
identification of, 168 
staining, 166 
ZENKER’S fluid, 20, 173 
Ziehl-Neelsen method for sections, 
156 
for sputum, 152 
Ziehl’s carbol-fuchsin, 172 
Zylonite, 15 
