588 
Meissl’s method for determining fer- 
menting power of fungi, 220 
Metals, action of on bacteria, 1383 
Methods of adding “bleach” to water, 
327 
—— water treatment, 324 
— for study of yeasts, 218 
Methyl red test in water bacteriology, 
307 
Micro-analysis of tomato products, 515 
Micrometer, ocular, 436 
Micrometry, 34 
Microscope, 23 
Microscopic agglutination, 321 
— examination of gastric contents, 233 
— method for milk analysis, 395 
Microspira cholere, in feces, 257 
— — — milk, 413 
—-——— water, 322 
Migula’s classification of bacteria, 95 
Milk agar, preparation of, 72 
— borne epidemics, 541 
— medium, characters of bacteria in, 112 
— —, preparation of, 71 
— of lime, 138 
— proteins, 365 
—- samples, 396 
— standards, 392 
Millon’s reaction, 191 
Mills-Reincke phenomenon, 268 
Modified aeroscope, 265 
Mohler’s method for bacteria in cheese, 
432 
Moist chamber preparations of yeasts, 
219 
— heat sterilization, 122 
Molds in butter, 425 
—, structure, 203 
Moore’s staining dish, 80 
Miquel culture flask, 5 
Mordants, 81 
Morishama and Teague’s method for 
B. typhosus in feces, 257 
Motility, 109 
Mucor, 205 
— mucedo, 204 
Muir’s method for staining capsules, 83 
Miiller’s classification of bacteria, 94 
Mycoderma in bread yeast, 221 
INDEX 
N 
Naegeli’s mediitm, 63 
Naples jar for staining, 80 
Neisser’s method for spore staining, 85 
Nesslerization, 281 
Neutral red agar, 50 
— — bile salt agar, 49 
—~ — broth, 46 
Nicoll’s modification of Gram’s stain, 83 
Nitrate broth, 45 
Nitrates, determination in water, 283 
Nitrite formation, 116 
—, test for, 116 
Nitrites, determination in water, 283 
Nitrogen-free medium for bacteria, 65 
—, significance in water analysis, 280 
Nitroprusside reaction for acetone, 195 
Nitrosoindol test, 115 
North’s agar-gelatin medium, 51 
Novy’s anaerobic method, 23 
Number of bacteria in feces, 238 
Numerical aperture, 28 
Nutrient broth, preparation, 44 
— —, characteristics of bacteria in, 110 
— gelatin, 55 
Nylander’s test for reducing sugars, 196 
O 
Objections to pasteurization, 416 
Objectives on microscope, 27 
Oculars on microscope, 31 
Odor, determination of, in water, 279 
Oidium lactis, 205 
Omelianski and Winogradski’s medium, 
67 
Opinions on bacterial count in milk, 389 
Organic acids in the stomach, 283 
Organic halogens, test for, 189 
— nitrogen, test for, 187 
— sulphur, test for, 188 
Origin of bacteria in meat, 479 
— — epidemics, 544 
Ox-bile medium, 59 
Oxygen consumed, determination of, in 
water, 284 
— relations, study of, 110 
— solution in water, 345 
