7 i6 



INDEX OF SUBJECTS. 



Intestines, 547 

 Introduction, 2 

 Invisible organisms, 64 



determination of, 66 



evidences of, 64 

 Iron in soil, 290 

 Isoprecipitin, 571 



KATABOLISM, 130 



theory of, 144 

 Kepfir, 367 

 Koji, 443 

 Kumiss, 367 



LAKES, microorganisms in, 200 

 Leben, 369 

 Leucin, 114 



Leucocytes in milk, 331 

 Leucocytotoxins, 564 

 Light, heliotaxis, 164 



heliotropism, 164 



influence of, 162 



upon organisms in water, 201 



qhoto taxis, 164 



phototropism, 164 



production, 129 



radium rays, 165 



x-rays, 165 



Lime in soil, 244, 284, 286 

 Lungs, 546 

 Lysinogen, 560 

 Lysins, bacterio-, 559 



cyto-, 559 



hemo-, 559 



structure of, 560 



MAGNESIUM in soil, 245, 284, 286 



Mallein, 488 



Manganese in soil, 291 



Mead, 442 



Mechanical effects, influence of, 168 



Media, beer as, 435 



influence of physical structure, 167 



must as culture, 418 



soil as culture, 227 



wine as culture, 418 

 Metabiosis, 182 

 Metabolism, action of microorganisms on, 



538 



mechanism of, 130 



of microorganisms, 81 



physical products of, 128 



products of, 101 



theory of, 130 



Methods of studying bacteria in soil, 241 

 Methyl-guanidin, 115 

 Mexican pulque, 442 



Microbiology, of air 185 

 of alcohol, 418 



distilled, 443 



products, 418 

 of beer, 435 

 of bread, 460 

 of butter, 335 

 of cheese, 346 

 of cider, 440 

 of compressed yeast, 460 

 of dairy (various) products, 363 

 of food poisoning, 411 

 of foods preserved by chemicals, 402 

 of food preserved by cold, 395 

 of foods preserved by drying, 374 

 of foods preserved by heat, 381 

 of ginger beer, 443 

 history of, i 



of human and animal diseases, 520 

 of hydromel, 442 

 of immunity, 541 

 of indigo, 465 

 of mead, 442 

 of milk, 292 

 of perry, 440 

 of plant diseases, 490 

 of pombe, 443 

 of retting, 465 

 of rice, 443 

 of sake, 443 

 scope of, 9 

 sera, 480 

 of antisera, 480 

 of sewage, 212 

 of soil, 226 

 of starch, 463 

 of sugar, 463 

 of susceptibility, 541 

 of tanning, 465 

 of tobacco, 464 

 of vaccines, 467 

 of vegetables (pickles, sauerkraut 



etc.), 462 

 of vinegar, 448 

 of water, 192 

 of wine, 418 

 Microorganisms, acetic in vinegar, 448 



in wine, 423 



acid-forming in milk, 306 

 aerobic, in soil, 270 



in wine, 423 

 air, 185, 191 

 alga; in soil, 240 

 anaerobic, in sewage, 213 



in soil, 240 



in wine, 424 

 B. coli in water, 195 



