514 



Index 



R 



Rane, F. W., 435. 



Raumer, v., 168, 183. 



Recessive, 481. 



Reed, H. S., 115, 183, 462. 



Reid, G. A., 493. 



Relation of Ca to Mg, 185, 192. 



Reproduction, 347 ; and heredity, 

 477 ; non-sexual, 372. 



Resins, occurrence, 264. 



Respiration, 200 ; aerobic, 284 ; 

 anaerobic, 294 ; and cell divi- 

 sion, 326 ; demonstration of, 

 282; of wounded plants, 290; 

 result of, 281. 



Respiratory activity, 286. 



Rest period, 318. 



Rhodes, A. L., 507. 



Richards, H. M., 304, 462. 



Richter, O., 507. 



Ringing, 114, 273. 



Root cap, 49, 62. 



Root excretions, 447. 



Root hairs, 45, 61. 



Root pressure, 77, 82. 



Root systems, 39, 60. 



Root tip, structure of, 50, 62. 



Root tubercles, 247. 



Rooting habits, 41. 



Roots, acid excretion from, 161, 

 167 ; corrosion by, 167 ; solvent 

 action of, 160. 



Roots, elongation, 311, 341. 



Rossi, G. de, 249. 



Rotation, 30. 



Rotmistrov, V., 63. 



Ruhland, W., 83. 



Running out, 375. 



S 



Sachs, J., 13, 63, 115, 168. 

 Saida, K., 249. 



Sand hills, vegetation of, 130. 

 Sap pressure, 77, 82. 



Schenck, A., 13, 507. 

 Schimper, A. F. W., 13, 135. 

 Schreiner, O., 462. 

 Schunck, C. A., 225. 

 Scion propagation, 330. 

 Sclerenchyma, 26. 

 Secondary thickening, 320. 

 Seed, buried, 391 ; delayed germi- 

 nation, 392 ; habit, 347 ; har- 

 vesting, 388 ; maturity, 385 ; 

 production, 381 ; size and weight 

 of, 393 ; vitality, 389. 

 Seedlessness, 369. 

 Segregation, 484. 

 Selection, 488. 

 Selective absorption, 75. 

 Self-sterility, 362. 

 Semi-permeable membrane, 65. 

 Senn, G., 225. 

 Shamel, A. D., 380, 399. 

 Shantz, H. L., 135. 

 Shrinkage, 82. 

 Shull, G. H., 490, 493. 

 Siemens, C. W., 435. 

 Sieve tubes, 28. 

 Silicon, 182. 



Smith, J. W., 135 ; L. H., 493. 

 Snow, L. M., 63. 

 Sodium, 181. 

 Soil, bacteria, 240; fertility, 152, 



162 ; particles, 52 ; texture and 



water capacity, 53. 

 Solution cultures, 151, 165. 

 Sorauer, P., 13, 63, 135. 

 Spalding, V. M., 63, 507. 

 Species and varieties, 464. 

 Starch, 207, 256, 274; digestion, 



277 ; test for, 222. 

 Stem apex, 313 ; elongation of, 314, 



341. 



Sterome, 27. 



Stevens, W. C., 13, 63, 279, 346. 

 Stewart, J. B., 435. 

 Stimulation, 451. 

 Stimulus and response, 495. 

 Stock and scion, 330. 



