INDEX 



References are to pages 



Bass, a bony fish 106 



example of fish 6 



Bat, enemy of mosquito ... 42 



hibernating (fig-) 151 



Beaks of birds, variations in . 137 



Bean, an irregular flower . . . 302 



distribution of 318 



early cultivation in America . 317 



embryo, growth of 264 



example of dicotyledons ... 7 



field (fig.) 317 



flower (fig.) 296 



foodstuffs in 265 



fruit of (fig.) 307 



germination of (fig) .... 264 



leaf, cross section of (fig) • . 273 



pistil (fig.) 297 



plant (fig.) 259, 267 



injured by bacteria (fig.) . . 315 



reasons for studying . . . 259 



raising of 316 



root, central cylinder of (fig.) . 268 



cortex of (fig.) 268 



epidermis of (fig.) .... 268 



sections of (fig.) 268 



showing tubercles (fig) • • 270 



seed, laboratory study of . . 261 



parts of (fig.) 260 



relation to flower .... 297 



seedling, parts of 267 



stamen (fig.) 297 



stem, laboratory study of . . 272 



summary of 320 



Bean and pea, photographs of 



(fig.) 260 



Bean blight 315 



Bean family, members of . . 318 



Bean -weevil, larvae of . . . 316 



work of 315 



Beans as food 178 



cheapness of, compared with 



meat 317 



digestible • . . 317 



for hogs or sheep 316 



value of 317 



Beans damaged by -weevils 



(fig.) 315 



Bee farms, escape of bees 



from 35 



Bee fly, a beneficial insect . . 41 



Beech, value of 



Beech family, description of . 

 Beech leaves, and buds of 



(fig-) 



Beechnut, a dry fruit (fig.) . . 

 Beef, value of, as food .... 

 Beef extract, in agar-agar . . 

 Beef jelly exposed, in sanitary 

 dairy (fig.) 



in unsanitary dairy (fig.) . . 

 Beer, manufacture of ... . 



use of yeast in making . . . 

 Bees, capturing a swarm of (fig.) 



classes of 



classified insecta 



clustering at swarming time 



(fig-) 



complete metamorphosis of . . 



cutting comb from hive (fig.) . 



drone 



gathering of nectar by . . . 



honey, value of 



imperfect female (worker) . . 



members of Hymenoptera . . 



nurses 



perfect female (queen) . . . 



swarming 



wax, value of 



Beet, a dicotyledon 



roots of (fig.) 



storage of food in 



Beetle, May, a harmful insect . 



potato, a harmful insect . . . 

 Beetles, classified 



example of complete metamor- 

 phosis 



field study of 



Belladonna, compared with 

 stramonium 



source of 



Berries, produced by rose family 

 Berry, a form of fruit .... 



collection of drupes .... 



defined 



illustration of (fig.) .... 



pepo, special kind of ... . 

 Bichloride of mercury, use of 

 Bilabiate flowers of mint . . 

 Bile, a digestive juice .... 

 Biological diseases, kinds of . 



327 

 327 



327 

 309 

 178 

 346 



350 



351 



355 



354 



37 



f 35 



6 



36 



19 



39 



35 



297 



39 



35 



20 



36 



35 



37 



39 



263 



283 



283 



26 



26 



20 



19 

 12 



331 

 331 

 329 

 308 

 310 

 310 

 310 

 311 

 253 

 331 

 172 

 233 



