161 



Cytospora 



Cream, microorganisms of sour, IV. 55, 

 289, 290, 317; V. 101, 158. 



Crystals, liquid, V. 198. 



Cucumber eels, II. 143. 



Cultivated plants, improvement, I. 359- 

 366, 401-408, 415-426; II. 189. 



Cultivation: alteration of characters dur- 

 ing, II. 239-242, 251, 260; III. 8, 21, 

 56, 262, 263, 278-292; IV. 38, 39, 89, 

 116, 141, 144, 147-149; V. 34, 199, 200, 

 204, 288. 



— alternative, IV. 143, 164, 165, 175. 



— anaerobic, see anaerobic culture. 



— of colonies of microorganisms in liquid 

 media, IV. 321-323. 



Cultures: combined, Algae with bacteria 

 or yeast, II. 235, 299. 



— combined, Cyanophyceae and Diatoms, 

 IV. 107. 



— combined, of anaerobic and aerobic 

 organisms, see: anaerobic culture. 



— elective, enrichment, selective, sepa- 

 rative, see: Isolation. 



— influence of aeration, ,IV. 183, 185, 

 188. 



— longevity. II. 260, 268, 344-346; III. 

 8. 



— of Algae, purification, II. 232, 294, 

 317. 



— of microorganisms in a gas atraosphe- 

 re of constant pressure or constant 

 volume, IV. 377*, 380. 



— of microorganisms in gas atmosphere, 

 research of gas consumption, IV. 373*, 

 374. 



— preservation in dried condition, II. 

 346; V. 35. 



— prevention of atavism, degeneration, 

 mutation, variation, IV. 38, 40-46, 89, 

 141, 142, 287, 333, 334. 338, 340; V. 

 42, 49, 51, 56, 66-68, 70, 104. 



Cumarine, IV. 12. 



Currants (Bes, Groseille, Korinthe, Krent), 



III. 54, 55-57, 176, 178, 179, 185. 



186, 258, 260, 261, 287; IV. 40; V. 



62, 167. 

 Cuttings. II. 8, 11, 24, 33, 34. 284-289- 



292; V. 78. 

 Cyanides. reduction of complex — by 



microorganisms, IV. 196, 197. 

 Cyanophyceae: see Algae blue. 

 Cynipidae: anatomy, VI. 49-57*. 



— appearance, I. 155; III. 207-209, 231. 



— excretion of odoriferous products, I. 

 175; VI. 50. 



M. W. Beijerinck, Verzamelde Gesch 



Cynipidae: experimental change of the 

 host plant III. 202. 203. 



— glands, VI. 50. 54. 



— heterogenesis, I. 150-155, 174. 175. 

 190, 201. 236. 237; II. 124, 125; III. 

 199-231; IV. 133-138. 



— hybridisation experiments. I. 263; II. 

 127. 



— oviposition, I. 144, 145-149. 165-181. 

 194, 195, 202. 209. 223-225, 234-237, 

 251. 256, 257, 268, 269, 273*-281*; II. 

 124-126; III. 206, 210,211,223-225. 

 232*; IV. 134; VI. 49-57*. 



— parthenogenetic and sexual genera- 

 tions possibly belonging together, IV. 

 136. 137. 



Cynips calicis: gall formation. III. 199. 

 204, 225-227. 



— the asexual generation of Andricus 

 cerri, III. 199-231. 



Cynips Kollari, the asexual generation of 

 Andricus circulans, IV. 134. 135. 



Cystococcus humicola: identity with the 

 gonidia of Lichens. II. 315, 316; III. 

 22; V. 288. 



— occurrence, II. 316; III. 23. 



— photosynthesis, influence of the culti- 

 vation on organic media, III. 295; V. 

 288. 



Cytase: IV. 217, 272; V. 169. 224. 225. 



— in yeast during budding, V. 225. 

 Cytase like action by Lactococcus aggluti- 



nans on yeast. IV. 318. 319. 

 Cytese, an endoenzyme with synthetic 



action. VI. 14. 

 Cytisus Adami: atavism, IV. 49-52. 305- 



307*-312. 



— bud variants, IV. 48, 49*. 50. 51*. 52. 

 305-307*-310, 311, 312. 



— mixed flowers and leaves. IV. 308. 

 309. 



— traumatic excitation. IV. 311. 312. 

 Cytisus laburnum, origination at Cytisus 



Adami, IV. 306, 310. 



Cytisus purpureum, origination by ata- 

 vism at Cytisus Adami, IV. 51*, 305- 

 307*-312. 



Cytogamy as a nutrition process, V. 66. 

 67. 



Cytolysine. V. 169, 175. 177. 



Cytolysis, IV. 271. 272. 273; V. 169, 173. 



Cytoplasm, role in reproduction, II. 15. 

 20. 105. 



Cytospora on cherry and plum trees, IV. 

 275. 276. 

 riften ; Zesde Deel. 1 1 



