185 



Oxygen 



Ontogenesis: influence of nutrition, II. 8. 

 Orange (Oranjeappel), III. 162. 

 Orchids: II. 143. 



— germination, IV. 263, 265*. 



— mycorrhiza, IV. 263, 265*. 



Organ fonnation : see Morphogenesis, 



and: Mutation, organ forming — . 

 Organogenic influence on plant tissue by 



foreign substances, see ; Morphogenetic 



substances. 

 Orge : see Barley. 

 Origin of Species, I. 326, 406, 407, 419- 



424, 426; III. 205; IV. 46, 47; V. 65; 



VI. 80-86, see also: Species, physiologi- 



cal. 

 Orme: see Elm. 

 Orseille Lichens, V. 153. 

 Orthogenesis, IV. 339, 340. 

 Orthospinae wasp, parthenogenesis, I. 



252. 

 Oscillaria: cultivation, IV. 109, 128. 



— influence of nitrogen compounds, IV. 

 106, 109, 126. 



— relation between light and microaero- 

 phily. IV. 126. 



Osmosis, in colloids, IV. 344-346. 

 Osmotic pressure, bacteria sensible for — 



(tonotaxus), III. 245, 249-252. 

 Oviposition and ovipositor of Gall wasps, 



structure, I. 142-149, 165-181, 194, 



195, 202, 209, 223-225, 234-237, 251, 



255-257, 268, 269, 273*-281*; II. 105, 



124-126; VI. 49-57*. 

 Oxalate as a carbon source, IV. 81, 82, 



90; VI. 4. 

 Oxidases: III. 332, 336; IV. 10, 11; V. 



114, 143. 218, 252-254. 



— as the genes of the respiration func- 

 tion, V. 252-254. 



Oxidation: and growth, separate proces- 

 ses, V. 179, 185, 188, 191. 



— fermentation — , III. 15. 



— "intramolecular", II. 151; IV. 193, 

 194, 210. 



— of hydrogen, IV.379; V. 137,228,231. 



— of manganese carbonate by micro- 

 organisms, V. 141, 143, 148. 



— of mannitol to laevulose by acetic 

 acid bacteria, IV. 120, 286. 



— of nitrite, IV. 379; V. 191; VI. 71. 



— of nitrous oxide, IV. 380, 381, 383. 



— of organic acids by Azotobacter, IV. 

 110, 112, 113, 161, 165, 175, 258. 



— of pigments and chromogens, II. 333- 

 334-337, 352, 358*. 



Oxidation: of sulphur and sulphur com- 

 pounds, IV. 202, 205-211, 242-248, 379; 

 V. 135-137, 139, 228, 231, 281-288. 



— power of the soil, IV. 14; VI. 25. 



— processes of Bacterium xylinum, V. 

 236, 237. 



— processes of pigment bacteria, V. 1- 



10, 112. 113. 

 Oxidones, V. 253. 

 Oxybiophores, IV. 130. 

 Oxypangens, IV. 130. 

 Oxygen: carrier, III. 168. 



— compounds as oxygen sources, II. 

 151; III. 88, 89, 95-101, 322; IV. 352, 

 374-378, 383; VI. 79. 



— demonstration by growth of bacteria, 



11. 302, 303, 340; III. 314, 315, see 

 also: Respiration figures. 



— demonstration by means of indigo, II. 

 204, 234, 235, 246. 302. 304; III. 73-76, 

 88. 



— demonstration by means of luminous 

 bacteria, II. 205, 231, 302, 304; III. 25, 

 73; IV. 129-132, 194, 21 1 ; VI. 79. 



— demonstration by means of motility 

 of bacteria, III. 38, 167. 



— determination, quantitative, III. 73, 

 88. 



— elimination from cultures, see: Anae- 

 robic cultures. 



— excitation — , II. 151. 152, 203, 206, 

 207, 209, 235, IV. 193, 194, 210, 211. 

 352; VI. 10, see also : Oxygen. relation 

 to anaerobics. 



— form (aerobic form) of Granulobacter 

 III. 39. 67, 68, 71, 75*, 82*, 123, 

 316; IV. 147, 164, 224, 225; VI. 73. 



— free, in solutions of sulphuretted hy- 

 drogen and sulphites, IV. 194. 



— in relation to agglutination by Lac- 

 tococcus agglutinans, IV. 317, 318. 



— in relation to anaerobics, II. 151, 

 153, 154, 203, 209, 246, 340; III. 15, 

 16, 29, 33, 37, 38, 39, 61, 68, 71, 75, 

 77, 82*, 87, 88, 95-97-101, 118, 123*- 

 125, 247, 313-322; IV. 25, 110, 115, 

 116, 147, 149, 151-154, 193, 194, 197, 

 199, 210, 211, 220, 222, 224, 279, 280, 

 352; V. 11-14, 19, 33, 203, 204, 215, 

 277; VI. 3. 10.24.27, 73. 



— in relation to anaerobics, contact 

 caused by gas production and during 

 transferring, III. 15, 95-101; V. 33. 



— in relation to anaerobics when reducible 

 substances are absent, III. 89, 97, 100. 



