187 



Pigment bacteria 



Pear (Birne, Pereboom, Poirier), I. 15, 64, 

 141, 322, 325; II. 286; III. 343; IV. 12. 

 Peat, formation, IV. 250. 

 Pecher: see Peach. 

 Pecher-amandier : see Peach almond. 

 Pectase (Pectinase), IV. 154, 214, 217; 



V. 106. 



Pectin: IV. 154, 214-218, 226. 



butyric acid fermentation, IV. 154, 

 167. 



- preparation of pure, IV. 215. 

 Pectinase, IV. 154, 217; V. 106; VI. 7, 



9, 11, 14, 15, see also: Pectase and: 

 Cytase. 

 Pectose: IV. 212, 213*-218; V. 91; VI. 14. 



- fermentation, IV. 215-218. 

 Pectosinase: IV. 217, 218, 226-228, 272. 



- necrobiotic secretion, IV. 227. 



- preparation, IV. 218. 



Pellicles of microorganisms : see Films. 



Pentosan, IV. 252. 



Pepper (Peper), V. 120-127. 



Peppercorn, I. 17. 



Pepsine: II. 132, 182, 201, 202, 215; 



III. 169, 258, 266, 267, 343; V. 225, 



227; VI. 70. 



- demonstration, III. 226, 267. 



- diffusion, V. 225, 227. 



- not secreted by microorganisms, II. 

 201, 202; III. 169, 258, 266, 267. 



Peptone, assimilation by microorganisms, 

 II. 254-256-263, 269, 284, 289, 296, 



297, 299, 308, 313, 316; III. 7, 9, 11, 

 30, 61, 133, 183, 274, 276; IV. 29, 60, 

 73, 81, 118, 200, 226, 279, 284, 289, 

 295-297; V. 2, 5, 8, 9, 18, 201, 202, 

 206, 215, 253, 273; VI. 11, 13, 61, 77. 



Peptone-carbon organisms, II. 248, 250- 

 256, 257, 262, 267-270, 273, 281, 297, 



298, 313, 316; III. 7, 11-17, 133; IV. 

 60, 81, 295-297; V. 18, 201, 273; VI. 

 13, 61, 77, 78. 



Peptone organisms, II. 198, 250-252-256, 

 267-270, 273, 281, 298, 337, 339; III. 

 7, 32; IV. 295-297; V. 201, 202, 215. 



VI. 77. 



Pereboom : see Pear. 

 Peredineae, reserve food, IV. 241. 

 Pericambium, II. 14. 

 Pericycle, II. 14. 

 Permeability, V. 164. 

 Peroxidases: IV. 1 1 ; V. 40, 253. 



- as the genes of the respiration func- 

 tion, V. 253. 



Perzik : see Peach. 



Petaloidy, I. 411, 412. 



Petroleum, probable origin, V. 230. 



Pfirsich: see Peach. 



Philothion (Hydrogenase), III. 105; IV. 



204. 

 Phosphorescence : a necrobiotic process, 



II. 274; V. 205-207, 215, 251. 



- and secretion, II. 274, 275. 



- as an oxidation process, II. 270-275; 



V. 204, 206. 



- enzyme theory, II. 272; V. 206, 216, 

 250-252. 



- of the sea, II. 195: V. 200. 



- photoplasm theory, V. 205-208, 252- 

 254. 



- various theories, II. 270-275; V. 204- 

 216, 250-254; VI. 77. 



Phosphorescent: organisms, see: Lumi- 

 nous bacteria and: Luminous orga- 

 nisms. 



- wood, VI. 77. 



Phosphorescent plate method : demon- 

 stration of carbohydrases, II. 171, 

 172, 214, 218, 223, 224, 244-246, 278- 

 282; III. 131; VI. 77, 78. 



Photogenine, V. 251. 



Photopheleine, V. 250. 



Photophores, V. 252; VI. 77, 78, 79. 



Photoplasm, IV. 39; V. 206, 207, 215, 

 252-254. 



Photosynthesis: see Carbon dioxide as- 

 similation. 



Phycocyanine : absorption- and fluor- 

 escent spectrum, IV. 331. 



- preparation method (from Nostoc), IV. 

 331. 



Phyllotaxis, II. 107, 108, 109; VI. 28-45. 

 Phylloxera (Druifluis), III. 162, 163. 

 Phylogenesis, II. 16, 96-98, 288; III. 208, 

 228, 229, 231; V. 28, 41, 80, 82, 83; 



VI. 52, 81, 82. 



Physcia parietina, occurrence, III. 23. 

 Pigment: fermentation, III. 15; IV. 21. 



- oxidation, II. 333-334-337, 352, 358*. 



- reduction, II. 333-334-337, 352, 358* ; 



IV. 197. 



Pigment bacteria: II. 269, 307, 310, 327- 

 328-332, 357; IV. 13-17-22, 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. 3-8, 

 10, 22, 62. 



- classification, II. 332, 333. 



- with the pigment fixed in the bacte- 

 ria, see : Chromophorous bacteria. 



