INDEX 



487 



Stem, work of, 163-285. 



See, also, Corm, Rhizome and Tuber. 

 Sterility, self-, 309. 

 Sterilizer, 363.* 

 Stigma, 288*-290,* 291, 292. 

 Still, 137,* 138. 



Stinking Smut of Wheat, 400-401. 

 Stock, in grafting, 248. 



Stomata, 196-198,* 199,* 203*-206,* 207. 208,* 

 209.* 



artificial, 210,* 211.* 



effect of light on, 207-209, 345. 



function of, 207, 208. 



mechanism of, 208,* 209,* 210,* 211.* 



occur principally on under side of leaf, 

 215. 



of fruit, 317. 



water-plants, 339. 

 protection of, against dust, 214. 

 water, 214. 



reduction in number of, as protection 



against drying, 215, 335, 336.* 

 sunken, as protection against drying, 215, 



335, 337.* 



Stoneless Plum. See Plum, Stoneless. 

 Stoneless Prune. See Prune, Stoneless. 

 Stopper, method of fixing leaf or stem air- 

 tight in, 205.* 

 Storage of food. See Food, Storage of. 



water. See Water, Storage of. 

 Strains in beams, 265. 



stem, 265. 

 Straw as mulch, 115. 



benefits puddled soils, 129. 

 Strawberry, effect of fertilization on, 309. 



position of flower of, 307. 



protection of, from animals, 223. 

 Strength in relation to material, 265, 266. 

 Strengthening fibers, See Cell, Strengthen- 

 ing. 

 Structure, Cellular. See Histology. 



microscopic. See Histology. 

 Struggle for existence, 6, 46, 261, 262, 312, 



326, 330. 



String Bean. See Bean, String. 

 Structure determined by function, 179, 



186.* 



Style, 288.* 289, 290,* 

 Sub-irrigation. 131. 



Sublimate, corrosive, as disinfectant, 364. 



Subsoil, 107, 146, 



Succulents, 215. 



Sugar as preservative, .,86. 



cane, 165. 



changed to starch, 259. 



coagulates blood, 171. 



decomposition of, 381. 



fermentation of, 390. 



for yeast cultures, 389. 



formation of, 201. 



in fruits, 314, 315, 411. 



growing region, 253, 254. 



osmosis experiments, 16,* 17, 18, 19 * 



roots, 122. 



stems, 243. 250, 253, 251. 259. 



seeds, 164, 165. 



proteid test, 166, 178. 



stigma, 292. 



produced from starch, 167-169, 258, 259 

 314, 391. 



role of, in proteid formation, 253, 254. 



test for, 164, 165. 



travels in cortex, 254, 257. 

 wood in spring, 259. 

 Sugar Beet. See Beet, Sugar. 

 Sugar Cane. See Cane, Sugar. 

 Sugar Corn. See Corn. Sugar. 

 Sugar Maple. See Maple, Sugar. 

 Sugar Prune. See Prune, Sugar. 

 Sulphate of ammonium. See Ammonium 



sulphate. 



Sulphate of lime. See Lime sulphate. 

 Sulphate of sodium. See Sodium sulphate 

 Sulphur as disinfectant, 364. 



as remedy for plant diseases, 407. 



in proteid formation, 253. 



needed by plants, 139, 140.* 

 Sulphuric acid. See Acid. Sulphuno 

 Sundew loves sour humus, 351. 



pepsin in, 172. 

 Sunflower, cross-pollin.ition of : j pi 



flowers of, 298. 



effect of light on, 298 



germination of, 81. 



rise of sap in, 241. 



root cap of, 86. 



root pressure of. 243. 



seed of, 3.* 



