Chromogenous bacteria 



160 



Chromogenous bacteria: II. 269, 307, 310, 

 327-328-332, 357; IV. 13-22, 114, 119, 

 122, 124, 142, 143, 152, 197, 352-355; 

 V. 1-10, 112-115, 144, 149-159, 181- 

 184, 188, 190, 243-245, 280; VI. 3, 5, 

 8, 10, 22, 62. 



Chromogenous yeast, III. 345; IV. 217; 



V. 259-260, see also: Yeast red, and 

 Toruia. 



Chromoparous bacteria, II. 332, 333; IV. 



197. 

 Chromophorous bacteria: II. 332, 333; 



IV. 197; V. 184. 



— colourless varieties, II. 333. 

 Chromoplasm: IV. 42, 336-338; V. 35, 39. 



— as a complex of oxidases, V. 254. 

 Cicatrisation, I. 9, 64, 69, 80*, 266; II. 



35, 53, 54-56, 98, 99, 105, 117*; IV. 



311. 

 Cilia, staining, IV. 120, 123. 

 Citratc, dissimilation, II. 264; IV. 145, 



299, 354; VI. 4, 21. 

 Cleistogamy, II. 15. 

 Climate, resistance of plants to, I. 35; 



III. 162. 

 Clostridium form : of bacteria, IV. 365*, 



369, 383*. 



— of Granulobacter: III. 39, 66-68, 71, 

 75*, 85*, 316; IV. 116, 147-149, 164, 

 284, 369; VI. 3. 



— of Granulobacter, method for obtai- 

 ning, III. 66-68, 71, 316,; VI. 73. 



Clover (Klee, Trèfle), IV. 132, 259, 260, 

 274; V. 79, 265; VI. 71. 



— red (Klee, rot), II. 167; IV. 42. 



— white (Klee, weiss), II. 179; IV. 129. 

 Clubbing roots, II. 5, see also; Plasmodio- 



phora disease. 

 Cobra snake, II. 126. 

 Colloidal silicates in humus, V. 180,282; 



VI. 4, 22, 25. 



Colloids: III. 187, 188; IV. 341-348; V. 

 93, 197, 198. 



— as Solutions, IV. 344, 347. 



— mixtures, gelatinising, IV. 343, 344; 



V. 93. 



— mixtures, osmotic balance and water 

 interchange, IV. 344-346. 



— polarisation of the light, IV. 346; V. 

 92, 197, 238. 



— protective, V. 197, 198. 



Colonies: of microorganisms in liquid me- 

 dia, IV. 321-323. 



— of yeast, agglutination, IV. 321, 

 322. 



Colony counting, III. 7, 195; VI. 19, 71. 



Colony selection as a prevention or a 

 stimulation for atavism, degeneration 

 and mutation, II. 200; III. 176, 182, 

 257, 263, 279; IV. 38. 40-47; V. 66-68, 

 70. 



Coltsfoot (Hoefblad), I. 81-89. 



— alternative host for rust, I. 89. 

 Colza (Koolzaad), I. 16, 62. 

 Combination, V. 26, 28, 67, 70, 73, 84. 

 Compressed yeast: see Yeast pressed. 

 Concentration of the medium, influence 



on proliferation, II. 329; III. 8; VI. 



62. 

 Concrescence of roots, II. 13, 27. 

 Condensation droplcts in agar plates, eli- 



mination, II. 164, 187*; IV. 117, 147, 



335; V. 44, 187; VI. 4. 

 Coniferae: heteromorphism, II. 283-292. 

 — - reproduction by cuttings, II. 283-293. 

 — - seedlings, influence of pruning and 



nutrition on the conservation of youth 



forms, II. 288, 291. 

 Constancy: of cultures, protection, IV. 



40-46, 89, 141, 142, 287. 333, 334, 338, 



340; V. 42, 49, 51, 56, 66-68, 70, 104, 



see also: Regeneration. 



— of species and varieties, III. 165, 265; 

 IV. 38-47, 76, 333-340; V. 29, 104, 

 155. 



Contagium vivum fluidum, III. 296- 



312, 323, 324; IV. 253; V. 137-139; 



VI. 19. 

 Continuative variability, V. 26. 

 Copper, poisonous for Bacillus oligocarbo- 



philus, IV. 181. 

 Coral, I. 127. 

 Coriander, V. 123, 125. 

 Coryneum Beijerinckii: causing gummo- 



sis directly by enzymatic action, I. 



322, 328, 336, 338, 342-345. 



— causing gummosis indirectly after 

 necrosis of the parenchyma, IV. 271- 

 272-276; V. 172. 



— diagnosis. I. 331-335, 356*. 



— pure culture, IV. 267. 



— transformation into gum, I. 341, 343, 

 356; IV. 272; V. 172. 



Coryneum gummiparum, diagnosis, I. 353. 



Cosmic dust, IV. 324-326, 332. 



Cosmic panspermy, III. 159, 160; IV. 



108, 325, 326, 332; V. 83, 135. 

 Cotton (Katoen), III. 168. 

 Coudrier: see Hazel. 

 Crab. I. 296. 



