7io 



INDEX OF SUBJECTS. 



B. coli in water, 195 



typhosus in water, 196 

 Bacteria, (See microorganisms), 

 cell, 45 



aggregates, 45 

 capsule, 48 

 cytoplasm, 49 

 flagella, 52 

 sheath, 49 

 wall, 48 



classification of, 56 

 cultivation of, 62 

 form- types, 37 



gradations, 37 

 involution, 38 

 higher, 54 

 motion, 39 



brownian, 39 

 character, 40 

 organs of, 40 

 rate, 40 

 vital, 40 



pathogenic, 313, 521 

 relationship, 62 

 reproduction, 41 

 spore, 43 

 vegetative, 41 

 size, 39 

 weight of, 89 

 Bacterial matter, availability of, 266 



substance in soil, 265 

 Bactericidal substances, 559 

 Bacterins, 478 

 Bacteriolysins, 559 

 Basidium, 15 

 Beer, 435 



after-treatment of, 439 

 bacteria of, 440 

 brewing of, 436 

 composition of, 435 

 diseases of, 439 

 enzymes of, 436 

 fermentation of, 438 

 grains used in, 435 

 kinds of, 435 

 malting, 436 

 raw materials of, 435 

 yeasts of, 435 

 Biological factors influencing origin and 



formation of soil, 284 

 Biological relations of nitrogen-fixation, 



269 



Blood-forming organs, action of micro- 

 organisms on, 539 

 Bread, 460 



bacteria of,*46o 

 dough of, 460 



Bread, French, 462 



leavened, 461 



salt rising, 461 



sponge for, 461 



yeasts of, 460 



Bubonic plague, vaccine, 478 

 Butter, canned, 366 



decomposition of, 343 



flavor of, 336, 343 



-milk, 371 



pathogenic bacteria in, 345 



sour-cream, 335 



sweet-cream, 335 



types of, 335 



CANNED goods, butter, 366 



cheese, 366 



chemical changes in, 393 



corn, 390 



detection of changes, 393 



fish, 389 



fruits, 390 



meats, 389 



microbial changes, 393 



peas, 390 



spoliation of, 393 



vegetables, 390 

 Canning, 391 



cleanliness in, 391 



heat required for, 392 



receptacles for, 391 



water supply for, 391 

 Canning of foods, commercial importance, 

 382 



dietetic importance, 381 



economic importance, 382 



health importance, 382 



historical resume, 381 

 Cadaverin, 115 

 Calcium in soil, 244, 286 

 Carbon cycle, 125 

 Carbon-nitrogen ratio in soil, 252 

 Carriers of disease, animal, 413, 516 



human, 413, 527 



of infection, 413 



milk, 329 



water, 196 



Cellulose, 87, 135, 246 

 Certified milk, Boston, 296 



Brooklyn, 296 



Chicago, 296 



New York, 296 

 Cheese, abnormal, 359 



acid-curd, 346 



bitter, 358 



Camembert, 362 



canned, 366 



