INDEX 



459 



Birds bury seeds, 69. 



distribute seeds, 324, 325. 

 Bird's-eye-Maple, 262. 

 Bitter taste as protection against animals, 



222, 223. 

 Blackberry, climbing of, 270. 



contraction of root of, 87. 



protection of stomata by, 214. 



rooting at tip of, 87. 

 Blackberry hybrids, 426,* 427.* 

 Bleaching powder, 23. 

 Bleeding of plants, 243.* 

 Blood, coagulation of, 171. 



composition of, 171. 



in relation to oxygen, 176. 

 Blue, preferred by bees, 298, 299. 

 Blue rays cut out by potassium bichromate, 



265. 



Blue jays bury seeds, 69. 

 Blnestone. See Copper Sulphate. 

 Blue Vitriol. See Copper Sulphate. 

 Boilers, pressure in, 74. 

 Boiler-scale, 151. 

 Bone as fertilizer, 150, 151, 153. 



phosphorus from, 150. 

 Bone-black as fertilizer, 151. 

 Bone-meal as fertilizer, 151. 

 Bone-superphosphate, 139, 150, 153, 154. 

 Boneset, protection of, against animals, 223. 

 Boracic acid. See Acid, Boracic. 

 Bordeaux mixture, 407. 

 Bordered pits, 227,* 232,* 234.* 

 Borers, may promote fruit production, 319. 

 Boston Ivy. See Ivy, Japanese. 

 Bran, 178. 

 Branch. See Stem. 

 Brassica. See Brussels Sprouts, Cabbage, 



Mustard and Rape. 

 Brazil nut, micropyle of, 8,* 9. 

 Bread, 178. 



crust of, contains dextrin, 168. 



Mould. See Mould. 

 Breaking stem to increase fruit production, 



318, 319. 



Briggs, on soil, 129, 133. 

 Brine, as preservative, 386, 387. 

 Broom, protection of, against drying, 215. 

 Brownian motion, 361. 

 Brussels Sprouts, bud of, 250,* 251. 



Buckeye, flower-buds of, 286. 



fruit of, how supplied with food, 313. 



germination of, 58,* 59,* 60,* 85. 



pocket of seed of. 20, 58.* 



preparation for flowering of, 286. 



seed-cover of, 8. 



seed of, structure of, 58,* 59,* 60. 



See, also, Horse-chestnut. 

 Buckwheat, germination, 47. 



self- vs. cross-pollination, 302. 

 Buds, crystals in, 254. 



flowers of, 286-288. 



food in, 253. 



formed on roots, 249. 



latent, 262.* 



opening of, 25 1. 



protection of, against dryness, 213, 214, 

 251, 334. 



structure of, 250,* 251. 

 Bud-scale, 288. 



function of, 214, 251. 

 Bud variation. See Variation. 

 Bulbs, propagation by, 433. 



storage of food in, 260, 261, 286. 

 Bulrush, strengthening fibers of, 267.* 

 Bundles. See Fibrous Bundles. 

 Bur Clover. See Clover, Bur. 

 Burbank, acknowledgement to, x. 409. 



work of, 409-411,* 412, 413,* 414* 415,* 

 416,* 417, 422, 423,* 424,* 425,* 426,* 

 427,* 428, 429* -432. 

 Burdock, dispersal of seeds, 323.* 

 Burs, 323.* 

 Butter, emulsification of, 169, 170. 



preservation of, 386. 

 Buttercup, contraction of root of, 87. 



water, 338, 339.* 

 Butterflies, visual powers of, 300. 



Cabbage, self- vs. cross-pollination of, 302. 



strengthening fibers of leaf of, 267. 

 Cactus, effect of water and darkness on, 

 329,* 380. 331.* 



fruit of, production of, increased by dry- 

 ness, 342. 



habit of, 329, 330, 331.* 



protection of, against animals, 334. 

 . dryness, 215. 333. 



storage of food in, 286. 



