Iiulfx 



319 



(,'arl)()li>clrali's, tU-t()iiii)ositi(Hi ol, 



109-1 17 

 effect on aninionia fomiation, 174, 



178 

 Carbon bisnlfidc, effect of, 298 

 Carbon dioxide, exolution of, 41-44, 



107-108, 142, 149-163 

 formation of, 252 

 liberation of, 256, 258 

 in soil, 98, 249 

 Carbon monoxide oxidation, 68 

 Carbon-nitrogen ratio, 140, 145, 157, 



163 

 Cellfalcicula, 76 

 Cellulose, effect on nitrogen fixation, 



206 

 Cellulose-decomposing bacteria, 74- 



76 

 Cellulose-decomposing fungi, 84 

 Cellulose decomposition, 15, 20, 23, 



72, 110-114, 263 

 CeUvibrio, 76 

 Cephalosporium, 83 

 CepJudothecium roseum, 75, 167, 278 

 Cercomonas, 92 

 Cer. crasscauda, 91 

 Chaetomium, 38, 86 

 Chemical treatment of soil, 296, 299 

 Chernozem, 143 

 Chitin, 172 



Chlamydobacteriales, 60 

 Choline, decomposition of, 119, 168, 



236 

 Chromobacteriutn violaceum, 268 

 Ciliata, 90 

 Cladosporium, 83 

 Clavaria flava, 86 

 Clay-humus complex, 129-130 

 Clitocybe clavipes, 86 

 Cl. geotropa, 86 

 Clostridium, 193, 194, 199, 263 

 Cl. amylobacter, 74 

 Cl. bifermentans, 285 

 Cl. butylicum, 198 

 Cl. cochlearius, 285 

 Cl. oedematiens, 285 

 Cl. pa.'fteiirianum, 192, 193, 194, 197, 



198, 200 

 Cl. perfringens, 122 



(7. puhificus, 172 

 Ct. ptitrificus tenuis, 74 

 Cl. putrijicus vcrucausus, 74 

 Cl. sporogenes, 285 

 Cl. tertius, 285 

 Cl. tetani, 74, 285 

 Cl. tcfaunmorphus, 74 

 Cl. welchii, 73, 285 

 Club root, 300 

 Cobalt, 242 

 Cocci in soil, 40 

 Coccospora agricola, 115 

 Cold manure, 309 

 Colletotrichum, 278 

 Colpoda cucidlus, 92 

 C. steitiii, 90, 92 

 Combustion, 1 



Composition of soil, 29, 30, 31 

 Composts, 52, 53, 99, 307, 313, 338- 

 339 



of sulfur, 231 

 Concept of soil microbiology, 4 

 Coniophom, 121 

 C. cerebella, 121 



Contact slide method, 36, 43, 295 

 Control of plant diseases, 295 

 Copper, 242 

 Coprinus, 122 

 C. radians, 122 

 Coprophilic fungi, 83, 84 

 Com, composition of, 103, 106 



decomposition of. 111 

 "Corrosion," 121 

 Corticium vagtim, 287 

 Cortinarius fulgens, 86 

 C. mucosas, 86 

 Corynebacterium, 70, 77 

 C. liquefaciens, 70 

 Crop, effect of, 253 

 Crop rotation, 209, 296 

 Crop yields, 50, 162 

 Cross inoculation, 224 

 Culti\ation, effect of, 332 

 Culture methods, 41 

 Culture solutions, 18 

 Cunninghamella, 239, 264 

 Cun. elegans, 278 

 Curvularia, 328 



