INDEX OF SUBJECTS 



875 



Chaetocladium, 249 



Chaelomella, 257 



Chaetomium, 3, 238, 250, 251, 258, 260, 



264 

 Chaetonatus, 351 

 Chamaesiphonaceae, 226 

 Chamaesiphon, 226 

 Chambers apparatus for isolation of 



bacteria, 56 

 Charophyta, 230 

 Chemical activities of microorganisms, 



369 

 agents, influence of, on protozoa, 325 

 composition of the microbial cell, 377 

 Chilodon, 335 

 Chilomonas, 334 

 Chilopoda, 355, 357 

 Chinon, action of, on bacteria, 165 

 Chironomidae, 358 



Chitin in the microbial cell, 382, 489 

 Chitinase, 489 



Chlamydomonas, 211, 228, 233, 334 

 Chlamydophrys, 332 

 Chlorella, 228, 232, 233 

 Chlorochytrium, 228 

 Chlorococcum, 224, 225, 228, 233 

 Chloroform as an agent of partial 



sterilization of soil, 754 

 Chlorogonium, 217, 334 

 Chlorophyceae, 3,215,220, 224, 225, 228 

 Chlorophyll in algae, 215 

 Choenia, 335 

 Cholesterols in soil, 671 

 Choline in soil, 479, 485 

 Chordatainsoil, 342 

 Chordeuma, 355 

 Chromatium cuculliferum, 83 

 Chroococcaceae, 226 

 Chroococcus, 226 

 Chrysamoeba, 334 

 Chrysomonadinae, 334 

 Ciliciopodium, 256 

 Ciliates, in soil, 3, 48-49, 314, 328, 335 



cultivation of, 319 

 Citric acid, 410 



Citrate-glycerin agar, 291, 306 

 Cladomonas, 334 

 Cladophora, 224, 228 



Cladosporium, 155, 256, 258, 264, 265, 



278, 763 

 Cladothrix, 287, 288 

 Classification, of actinomyces, 294-290 



of anaerobic bacteria, 172 



of autotrophic bacteria, 388 



of soil animals, 341 



of soil bacteria, 58-60, 141, 143, 151 



of soil protozoa, 313, 329 

 Clathrulina elegans, 249, 331 

 Clostenema, 334 



Clostridium, 59, 106, 107, 110, 115, 178, 

 204, 594 



americanum, 110, 172, 447 



butyricum, 161, 173 



pastorianum, 37, 104, 108, 109, 110, 

 111, 112, 120, 166, 172, 173, 558, 

 559, 560, 564, 566, 569, 641, 642, 

 752 (see also Bacillus amylobacler) 



thermocellum, 173, 194, 195, 202, 203 

 Clover, composition of, 428 

 Club-root of cabbage, 236 

 Coccaceae, 58 

 Cocci in soil, 11, 141, 154 

 Coccomyxa, 228 

 Coccospora, 252 

 Codosiga botrytis, 333 

 Coelhelminthes in soil, 342, 488 

 Cohnistreptothrix, 294 

 Coleoptera, 356, 357, 358 

 Coleps, 335 



Collembola, 356, 357, 358, 361 

 Colletolrichum, 807 

 Colloidal condition of soils, 33, 626 



nature of soil humus, 697 ^ | 



Colloids, influence of, on the growth of 



microorganisms, 578, 622, 627, 630 



properties of, 627-631 

 Colon group of bacteria in the soil, 155 



(see also Bad. coli) 

 Colony isolation, 167 

 Colpoda, 324, 330, 335 

 Colpidium, 317, 318, 321, 335, 338, 



637 

 Colponema, 333 

 Commensalism, 560 

 Commercial cultures of nodule bac- 

 teria, 822 



