ioi6 



INDEX 



Fixation of atmospheric nitrogen, 400 



of complement, 709 

 Flacherie of gipsy-moth caterpillar, 



935 



of silkworm, 906 

 Flagella, 24 



of bacteria, 105 

 formation of, 25 

 lophotrichous, 105, 106 

 monotrichous, 105, 106 

 peritrichous, 105, 106 

 of protozoa, 127 

 Flagella ta, characteristics, 134 

 diseases caused by, 879 

 locomotion in, 24 

 Food, alteration by heat, 526 

 appearance changes, 527 



due to heat, 526 

 B. botulinus in, 587 

 changes after cold storage, 544 



chemical from heating, 527 



during chilling, 543 



during cold storage, 543 

 desiccation of, 516 

 detection of spoilage, 540 

 digestibility changes in, 528 

 drying, 516 

 evaporation of, 516 

 effect of preservatives, 550 

 fermented, 559 

 home canning of, 539 

 infection from, 666 

 mechanical disintegration by heat, 



p7 



of microorganisms, 195, 221 

 alcohol, 224 

 amino-acids, 223 

 ammonia, 222, 223 

 amount required, 221 

 asparagin, 223 

 carbohydrates, 223, 226 

 carbon dioxide, 222, 223, 226 

 carbon monoxide, 222, 224 

 for energy, 224 

 for growth, 222 



Food of microorganisms, hydrogen, 222, 



224, 226 



hydrogen sulphide, 224 

 methane, 222, 224, 226 

 methods of securing, 195 

 minerals, 222, 224 

 nitrates, 223, 226 

 nitrites, 224 

 nitrogen (free), 223 

 organic acids, 223, 226 

 oxygen, 223, 226 

 peptones, 223 

 in soil, 358 

 thiosulphate, 224 

 normal fauna of, 528 

 normal flora of, 528 

 palatability changes by heat, 528 

 pasteurization of, 530 

 poisoning, 581 

 preservation by chemicals, 550 



by cold, 542 

 processing of, 532 

 spoilage of canned, 540 

 sterilization of, 532 

 yeast as, 563 



Foot-and-mouth disease, 859 

 Foot rot of sheep, 838 

 Formaldehyde, as disinfectant, 294 



as preservative, 557 

 Formic acid as preservative, 556 

 Foul brood, American, 920 



European, 926 

 Fowl diphtheria, 818 



plague, 860 

 Frambooesia, 904 

 Freezing of organisms, 274 

 Fruits, chemical preservation of, 553 

 pasteurization of juices, 530 

 refrigeration of, 548 

 sterilization of, 535 

 Fungi, basis of classification, 37 

 general, 36 

 imperfect, 40, 6r 

 reproduction of, 37 

 Fusarium, general characters of, 57 



