GLOSSAEIAL INDEX. 



19. 



Revolving nutation, 400. 



Khizogenic cells (p'<X a root; 

 produce), 115, n. 



Rhizoids (p<a, a root; elfios, like), 

 230. 



Rhizomes (pi^o^a, that which has taken 

 root), structure of, 153. 



Rhodospermin (p6.W, rose ; crn-ep^a, seed,) 

 295. 



Ripening of fruits and seeds, 460. 



Rocks, disintegration of, 237. 



Root-cap, 106, 107. 



Root-hairs, 108; corrosive action of, 

 246 ; distortion of, 231 ; increase the 

 absorbing surface of a root, 231; meth- 

 od of obtaining for study, 109 ; num- 

 ber of, on different plants, 231 ; office 

 of, in absorption, 231; size of, 231; 

 walls of, 108, 109. 



Roots, absorption by, 230, 244 ; amount 

 of branching of, 232 ; central cylinder 

 of, 110; colors of, 116; cortex of, 110; 

 crown, 153; depth to which branching 

 of, occurs, 233; extent of, 232, 235; 

 formation of, 107, 155; from leaves, 

 162; growth of, 107 ; influence of the 

 soil upon, 234; of cryptogams, 116; of 

 orchids, 109 ; oxygen needed by, 245 ; 

 parasitic, 116; piliferous layer of, 108; 

 primary structure of, 106; secondary 

 structure of, 112; types of branching 

 of, 115, n. 



Roridula, 345. 



Rose of Jericho, 400. 



Rosolic acid. See Corallin. 



Rotation of protoplasm, 200. 



Rubidium, occurrence of, in plants, 256. 



Rudimentary branches, 153. 



Russia matting, 147. 



Russow's potash-alcohol, 7. 



SAFRANIN (C 21 H, N 4 ), 19, 380. 



Salicin (C ls tt' ls OJ, 362. 



Saline matters, absorption of, by roots, 

 244. 



Sandy soil, 238. 



Sap, amount of, in plants, 265; flow of, 

 from plants, 264; pressure of, 264, 

 265. 



Saprophytes (o-an-pd?, putrid; Qvrov, a, 

 plant)', 289, 294, 337. 



Sap-wood, 141. 



Sarcode, 220. 



Sarracenia, 347 



Scalariform markings (scalaria, a lad- 

 der; forma, form), 30, 84. 



Scales, 69. 



Schizogenic development 

 cleave; yei/i/aw, I produce), 99, n. 



Schleim, 220. 



Schulze's macerating liquid, 14, 38, 39. 



Schulze's reagent, 9, 33, 76, 77, n. 



Schweizer's reagent, 12, 15, 32. 



Scion, 152, 444. 



Sclerenchyma (oxA.T?p6s, hard; ey^v/ia, an 

 infusion), 87. 



Sclerotic parenchyma (o-x^pos, hard), 

 62. 



Secondary liber, 113. 



Secondary structure, 105; of roots, 112; 

 of stems, 135. 



Secondary wood, 113. 



Secretions, of nectar, 451; receptacles 

 for, 97, 110 ; stigmatic, 427. 



Section-cutting, 3. 



Secundine (secundus, second), 178. 



Seeds, albuminous and exalbuminous, 

 181; arrested activity of, 459; changes 

 during the ripening of, 460; dissemina- 

 tion of, 400, 460; food in, 182, 437, 

 467; germination of, 462; germination 

 of oily and starchy, compared, 368 ; im- 

 mature, 460 ; increase of, in size, upon 

 the absorption of water, 463 ; integu- 

 ments of, 178; minute structure of, 

 178; protein granules in, 182; ripeness 

 of, 460; vitality of, 205, 461. 



Selenium, occurrence of, in plants, 256. 



Sensitiveness, 414; effect of anaesthetics 

 upon, 424; of leaf-blades, 419; of peti- 

 oles, 419; of roots, 415; of stamens, 

 423; of stems and branches, 417; of 

 styles, 424 



Sensitive plant, 420, 424. 



Sensitive tissues, 415. 



Shell-lac, 24. 



Sieve-cells, 91, 103, 112; contents of, 94; 

 development of, 122; of cryptogams, 

 94; of gymnosperms, 94; size of, 92. 



Sieve-plates, 91, 92. 



Sieve-pores, 91 , 93. 



Sieve-tubes. See Sieve-cells. 



Silica (SiO 2 ), deposits of, in plants, 39. 



Silicium, office of, in the plant, 255. 



Silphium laciniatum, arrangement of 

 parenchyma in the leaf of, 160. 



Silver, occurrence of, in plants, 256. 



Simple hairs, 68. 



Simple microscope, 1. 



Simple pistils, 173. 



Sleep-movements, 409 ; of cotyledons, 

 411; of floral organs, 412; utility of, 

 411. 



