INDEX OF SUBJECTS 



Absidia, 248, 258, 275 



Acacia, nodule bacteria of, 135, 136 



Acanthocystis aculeata, 331 



Acarina, 355, 357, 358 



Accumulative culture method, 54 



Acetaldehyde, 439, 467, 469 



Acetic acid, as a source of energy, 407 

 formation of, by bacteria, 178, 411, 

 414, 440 



Achnanlh.es, 227 



Achromatium, 79, 82, 83 



Acid soils, occurrence of algae in, 223 



Acidity of soil and development of 

 actinomyces, 42, 301, 810 



Acids and solubilization of phosphates, 

 656-660 

 formation of, in soil, 437-439, 635, 672 

 formation of, from monosaccharides, 



466 

 organic, utilization of, by fungi, 242 



Acremoniella, 255 



Acrochordbnoposita, 345 



Acrostalagmus, 254, 258 



Actinolaimus, 349 



Actinomonas, 333 



Actinomycetes (see Actinomyces) 



Actinomyces, 285-310, 490, 514, 636 

 ammonia formation by, 493 

 causing plant and animal diseases, 



809 

 cellulose decomposition by, 441 

 classification of, 306 

 description of, 285 

 importance of, in soil, 309 

 nitrogen fixation by, 105 

 occurrence of, in manure, 30 

 occurrence of, in soil, 39, 259, 260 

 reduction of nitrates by, 181 

 thermophilic forms, 157 



Actinomyces albojlavus, 309 

 albosporeus, 309 

 albus, 305, 307 

 alni, 310 

 annulatus, 305 

 aureus, 307, 309 

 bobili, 307 

 bovis, 803 

 californicus, 307 

 cellulosae, 444 

 chromogenus, 305, 701 

 citreus, 308 

 diastaticus, 308 

 erythreus, 308 

 exfoliatus, 308 

 fiavovirens, 308 

 flavus, 307 

 fradii, 309 

 gelaticus, 308 

 griseolus, 308 

 griseus, 308 

 halstedii, 305, 309 

 lavendulae, 307 

 lipmanii, 308 

 melanocyclus, 442 

 melanosporeus, 442 

 myricae, 138 

 niger, 305 

 olivaceus, 308 

 olivochromogenus, 306 

 pelogenes, 189 

 pheochromogenus, 307, 309 

 poolensis, 308 

 purpeochromogenus, 307 

 reliculi, 295, 307 

 reticulus-ruber, 307 

 roseus, 308 

 ruber, 307 



rutgersensis, 308, 309 

 scabies, 299, 301, 306, 616, 637, 803, 

 814 



867 



