INDEX OF SUBJECTS. 



715 



Food, mineral, 92 

 nitrogenous, 91 



amido-acids, 91 



ammonia, 91 



nitrates, 91 



nitrogen (free), 91 



proteins, 91 



urea, 91 

 non-nitrogenous, 90 



alcohols, 90 



carbohydrates, 90 



fats, 90 



hydrogen, 90 



methane, 90 



organic acids, 90 

 milk as, 292 

 normal fauna of, 385 

 normal flora of 385 

 nutritive value of chemically pre- 

 served 405 



palatability changes by heat, 384 

 pasteurization of, 319, 385 

 physical changes by heat, 383 

 plant, assimilation of, 234 

 poisoning, 411 

 preserved by chemicals, 402 



by drying, 374 

 by heat, 381 



by refrigeration, 318, 395 

 required, amount, 88 

 sterilization of, 388 

 vital disorganization of, 385 

 Formation of soil, 284 

 Frozen milk, 371 



GEMMA, 13 



Gemmulation, 72 



Genito-urinary tract, 547 



Germicides, 173 



Germicidal action in milk, 321, 323 



Ginger beer, 443 



Glycogen, 88 



Gonorrhoea, serum for, 46 



Gravity, influence of, 169 



Growth, inhibition of, 173 



stimulation of, 171 

 Guaranteed milk, 295 



HAIL, microorganisms in, 199 

 Haptophile receptors, 555 

 Haptophore group, 555 

 Heat production, 128 

 Helio taxis, 164 

 Heliotropism, 164 

 Hemolysiris, 559 

 Hemoopsonins, 567 

 Hippuric acid, 117 



History of microbiology, i 



History of non-symbiotic nitrogen-fixa- 

 tion, 269 



History of symbiotic nitrogen-fixation, 

 278 



Hydromel, 442 



Hydroxy-acetic acid, 115 



Hydroxy-phenyl-acetic acid, 116 



Hypha, 12 



ICE CREAM, 372 



poisoning, 416 

 Immunity, acquired, 552 



active, 552 



definition of, 541 



exhaustion theory of, 574 



familial, 544 



general, 541 



individual, 544 



natural, 543 



noxious retention theory of, 574 



passive, 552 



phagocytic theory of, 575 



plants, 490 



racial, 544 



side chain theory of, 574 



theories of, 574 

 Index, opsonic, 566 



percentage, 566 



phagocytic, 566 

 Indigo, 465 

 Indol, 114 

 Infection, air-borne, 190, 524 



animal carriers of, 526 700 



avenues of, 533 



carriers of, 526, 527 



cause of, 534 



channels of, 520 



contact, 527 



defined, 520 



droplet, 525 



dust, 524 



factors influencing, 532 



food, 526 



human carriers, 527 



manner of entering body, 523 



milk-borne, 313 



number of organisms involved in, 533 



resistance against, 534 



routes of, 528 



soil, 525 



sources of, 523 



variations of, 531 



virulence of, 532 



water-borne, 196, 525 

 Inflammatory processes, 548 

 Inheritance of disease, 542 



