Oxygen 



186 



Oxygen : in relation to fat production by 

 Saccharomyces pulcherrimus, V. 261. 



— in relation to fermentation, II. 144- 

 153-154, 203-207-209, 216, 246; III. 



15, 16, 61, 68, 72, 78-82, 89, 90, 

 95-101, 290, 314; IV. 193, 210, 279. 



— in relation to fermentation (an ab- 

 normal supply), II. 150, 246. 



— in relation to motility of bacteria, 



II. 195, 198; III. 27-38-42, 82-84, 89, 

 113, 121, 125, 3J5-319-321. 



— in relation to nitritation, III. 113. 



— in relation to nitrogen fixation by 

 Granulobacter, IV. 141, 147-149, 151, 

 164, 167, 173, 176, 302. 



— in relation to phosphorescence, II. 

 198, 204-209, 256, 257, 258, 272, 273; 



IV. 45; V. 204, 205, 206, 209, 215; VI. 

 78, 79. 



— in relation to photosynthesis, II. 235, 

 303. 



— in relation to quinone production by 

 Actinomyces, IV. 19. 



— in relation to sulphate reduction, III. 

 113. 118, 120-122. 



— in relation to variability, II. 346; 



III. 177. 178, 181; IV. 67, 70. 74-76. 

 141, 148. 149. 286. 287. 318. 336. 337; 



V. 204. 205, 209, 215. 



— in relation to virus, VI. 18. 



— oxidation (intramolecular -). II. 151; 



IV. 193. 194. 210; VI. 10. 



— removing of the last traces by micro- 

 organisms, III. 75, 82, 87. 110, 111, 

 315, 319; IV. 141, 148, 194, 201, 217; 



V. 274-277; VI. 3. 24, 27, 73. 



— production: see Carbon dioxide assi- 

 milation. 



— reserve — . II. 246. 340; III. 15, 



16, 61. 83. 96, 98, 100, 247, 313, 

 314-321, 322; IV. 193, 194; VI. 10, 

 see also : Oxygen in relation to anaero- 

 bics. 



— tension, demonstration by respiration 

 figures. III. 28. 29. 315-322. 



— transference, III. 168; IV. 192. 

 Oxygenase, V. 40, 253. 



Oyster (Huitre). IV. 102. 



Paardebloem : see Dandelion. 

 Pancreatine. II. 215, 269; V. 279. 

 Pangenesis, II. 8, 16, 136; III. 206, 229; 

 IV. 130; V. 248. 



Panspermy, cosmic, II. 308, 318; III. 



159, 160, 238-240; IV. 108, 325, 326, 



332; V. 83, 132, 135. 

 Papayotine, III. 343. 

 Papilionaceae: chemiotactic action on 



Bacillus radicicola, II.' 162, 163, 180. 



— nitrogen fixation, see: Bacillus ra- 

 dicicola and : Root nodules. 



— nitrogen nutrition, VI. 70, see also: 

 Bacillus radicicola and: Root nodules. 



— relation between the distribution of 

 certain — and the frequency oiAzoto- 

 bacter in the soil, IV. 304. 



— urease, V. 246, 247; VI. 20. 

 Papulospora manganica : agar agar as a 



carbon source; V. 145. 



— description, V. 145, 148*. 



— occurrence, V. 144. 



— ring formation, V. 144. 147. 

 Parachromophorous bacteria, II. 332, 



333. 

 Paramaecium Bursaria, relation between 



the zoochlorellae and Chlorella vulga- 



ris, II. 229-231-233, 304, 311; III. 



22; V. 288. 

 Paramylum. II. 229, 295, 296, 311; IV. 



240. 

 Parasitism: mutual, in Lichens, II. 316; 



III. 24. 



— of Phanerogamae, II. 93-94. 



— saprophytism and symbiosis of blue 

 and green Algae, I. 11, 12; II. 1, 295, 

 304-310-314-320; III. 24, 295; IV. 

 234. 



Parthenogenesis, I. 27, 149-155, 190, 



236-237, 252-254. 390; II. 124, 125, 



127; III. 199, 222; IV. 134. 

 Pastel: see Woad. 

 Pathogenic bacteria, modification and 



mutation of virulence, II. 341, 343. 



344; III. 303; V. 186. 216. 

 Pea (Erbse. Erwt, Pois). I. 180, 311. 361; 



III. 26, 32, 34, 39, 150; IV. 258, 260, 



368; V. 247, 264, 265, 267; 

 Peach (Pêcher, Perzik, Pfirsich), I. 125. 



323-326, 329-334, 335-342, 354, 356* ; 



III. 179, 309. 343; IV. 268, 271, 275, 



276. 311; V. 77. 168-176. 

 Peach Rosette. III. 309. 311. 

 Peach Yellows, III. 309, 310. 

 Peach almond (Almond tree, Mandelpfir- 



sich, Pêcher-amandier), I. 325, 332, 



341.356*; IV. 268. 269, 311; V. 168- 



171*-174*-175*-177. 



