INDEX 
A 
Acetaldehyde reaction for ethyl alcohol, 
194 
Acid fast staining, theory of, 87 
— — —, Ziehl-Niehlsen method, 86 
Acidity, degrees recognized in milk, 114 
— degrees recognized in clear media, 115 
Aciduric bacteria, 236 
Action of bacteria on carbohydrates, 
193 
— —— — glucosamine, 191 
— —- — — polypeptides, 190 
— —-— — proteins, 189 
— — bile on bacteria, 234 
— — certain bacteria on proteins, 367 
Adjusted milks, defined, 374 
Adulteration of compressed yeast with 
brewer’s yeast, 220 
Advantages of ‘‘bleach”’ in water treat- 
ment, 325 
— — pasteurization of milk, 416 
Aerobic respiration, 241 
Aeroscope, 264 
Agar, 48 
— colonies, study of, 110 
— for Ps. radicicola, 50 
— gelatin medium (North), 51 
— medium, plain, 48 
— stroke, study of, 110 
Age of milk, 377 
Agglutination of bacteria, 320 
Alanin, 184 
Albuminoid: ammonia, determination in 
water, 282 
Alcohol as a disinfectant, 140 
— table, 561 
Alcoholic fermentation, 194 
Alkaline blood agar, 70 
— hemoglobin agar, 70 
— methylene blue, 90 
Alkalinity, determination in water, 285 
Allen’s microscopic method of milk 
analysis, 404 
Alwood fermentation valve, 220, 221 
Analysis of mud deposits, 352 
— — sewage sludge, 352 
Anderson’s method for tubercle bacilli 
in milk, 413 
Amino acids in gelatin, 41 
— — — proteins, 184 
Ammonia production by pure cultures, 
116 
Ammonium chloride in bread, 218 
Anaerobic methods, 17 
—— respiration, 242 
Analysis of Liebig’s meat extract, 41 
Aniline gentian violet, 90 
Anti-protein sera, 491 
Antiseptic values, 143 
Albargin, disinfectant, 135 
Aperture, numerical, 28 
Aqueous alcoholic stains, 81 
— stains, preparation, 81 
Argentamin, disinfectant, 1385 
Argentose, 135 
Arginine, bacterial decomposition, 244 
—, chemical structure, 244 
Arnold steam sterilizer, 126 
Arnold’s test for heated milk, 372 
Ascomycetes, 202 
Asepsis in food preservation, 495 
Ash in milk, 368 
Aspartic acid, 186 
Atomic weights, 568 
Autoclave, 125 
Available chlorine, 136 
— oxygen in water, 344 
Ayer’s milk tube method, 408 
B 
Basidiomycetes, 202 
Babcock test for fat in milk, 369 
581 
