191 



Root nodules 



Resistance : of bacterial spores to alcohol, 



III. 91, 303. 



- of bacterial spores to alkali, IV. 94, 

 97. 



- of bacterial spores to drying, III. 91 ; 



IV. 325. 



- of bacterial spores to temperature, II. 

 299; III. 64, 71, 78, 91, 93, 315, 316; 



IV. 15, 85, 89, 90, 94, 96, 111, 115, 1 16, 

 141, 147, 149, 150, 152, 160, 161, 224, 

 325, 327; VI. 7, 9-11, 73. 



- of plants to climatic change and to 

 diseases, I. 35; III. 162. 



- of yeast and yeast spores to drying at 

 high temperature, III. 257, 260-262, 

 279-282, 285, 287-289; V. 117, 164, 165. 



Respiration: I. 149; II. 147; III. 26-42, 

 45-47, 84, 112, 118, 123*. 125, 126, 

 165-168, 246, 313-322; IV. 96, 116, 

 121, 147, 150, 151, 153, 176, 193, 202, 

 207, 245, 352; V. 7, 203, 232; VI. 23, 

 27, 78. 



- ammonia as a product of, V. 7. 



- conditions, influence, see: Oxygen. 



- enzyme, V. 7, 206, 215. 



- fermentation as a special form of, II. 

 147; VI. 10, 78. 



- intramolecular, IV. 193, 194, see 

 also: Fermentation. 



protoplasm, IV. 193. 



- protoplasm, as a complex of oxidases, 

 oxidones and peroxidases, V. 252, 253. 



- quotient, I. 149; V. 232. 

 Respiration figures: III. 26-27, 28-42*, 



45-47, 77, 83, 84, 112, 118, 123*. 125, 

 126, 246, 313-315-318-319-321; IV. 

 96, 116, 121, 147, 150, 151, 153, 176, 

 202, 207, 245, 352; V. 203; VI. 23. 



- and emulsion figures, IV. 246; V. 203. 



- apparent, caused by concentration 

 of foodsubstances in a certain layer, 

 III. 44, 118, 125, 319. 



- apparent, caused by specific weight, 

 III. 34. 



- between slide and coverglass, III. 

 35-42, 313-322; IV. 96, 116, 121, 147, 

 150, 151, 153, 176, 202, 207, 245, 352; 



V. 203; VI. 23. 



between slide and coverglass, im- 

 proved method, IV. 153. 



- in a chalk agar tube, III. 321. 



- in photosynthetic experiments, III. 

 38. 



- influence of sulphuretted hydrogen, 

 III. 40, 41. 



Respiration figures : preparation, how to 

 avoid streaming, III. 26-28, 33. 



Retinispora forms of Cupressaceae, II. 

 283-292. 



Retting of flax: bacterial action, IV. 212- 

 216, 217-228; V. 91; VI. 11. 



- chemical, IV. 215. 



- dew, IV. 215. 



- in streaming water, significance, IV. 

 218-221. 



- influence of salpetre and sulphuretted 

 hydrogen, IV. 220. 



- technical, IV. 222-227. 



- white and blue, IV. 215. 



- with pure cultures, IV. 216, 217, 220, 

 222, 224. 



Rhamnose, dissimilation, VI. 13. 

 Rhaphidium naviculave, description, II. 



229. 



Rhizoids, II. 112. 



Rhodites, oviposition, I. 25, 256-258. 

 Rice (Riz), III. 65; V. 195. 

 Rijzers (swell), in cheese, control, III. 



347; IV. 29, 288; V. 235. 

 Ring: disease of hyacinths, I. 285. 



- formation in auxanograms, III. 31; 

 V. 18. 



- formation of Actinomyces, V. 27, 88*. 

 Rings of Liesegang, V. 18,27,88*, 



144, 147. 



- of Newton, II. 168, 181; IV. 84, 

 102; V. 247, see also: Irisation. 



Riz : see Rice. 



Rotheln (becoming red of peach bran- 

 ches), I. 337. 



Rogge : see Rye. 



Roggeaaltje: see Rye eel. 



Roggegras: see Rye grass. 



Root buds: see Buds, adventitious at 

 roots. 



Root disease, II. 139. 



Root formation, theory, I. 395, 396, 397; 

 II. 128-131; V. 256. 



Root nodules : as metamorphosed lateral 

 roots, II. 156, 158; IV. 259. 



- Bacillus polymyxa in the bark, VI. 12, 

 15. 



- compared with galls, I. 12; II. 157, 

 158, 171, 178, 182. 



- description, II. 156-162, 172, 173, 

 182, 186*, 187*; III. 49-53; IV. 259. 



- enzymes in, VI. 70. 



- exhaustion by bacteria, II. 156, 159, 

 161, 173-176, 178, 182, 187, 323; III. 

 50, 51; VI. 61. 



