JXDEX. 261 



Blechnum Spicant, structure, habitat, and mode of reproduction of, i, 



366, 357 



Blood, formation and functions of, ii. 2, 3 

 Blue dyes, i. 123, 124 



Bog moss, structure, fructification, and habitat of, i. 332 

 Boleti, habitat and structure of the, i. 265 

 Boletus seneas, large amount of heat evolved by, i. 265 

 Bombyx rubi, fungi destructive of, i. 282 

 Boron, i. 18 



whence obtained, i. 18 



insolubility of, i. 18 



heat at which it burns, i. 18 

 Botryehium, habitat of the genus, i. 366 



Botrychium Lunaria. or moonwort, structure and habitat of, i. 366 

 Botryllidae, or star-like Ascidians. ii. 224 

 Botrytis Bassiana, a fungus parasite of the silk-worm, i. 274 

 Botrytis curta, development of, i. 294 

 Botrytis, the cause of the murrain in potatoes, i. 284 



structure of, i. 284 



Brachionus pala, structure of, ii. 162-166 

 Brachyura, structure and mode of reproduction of, ii. 189-197 

 Brackens, i. 358 



Brain, structure and functions of the, ii. 8 

 Branchipes stagnalis, structure of, ii. 210 

 Bread, fungus which attacks, hot from the oven, i. 296 

 Bread-fruit tree, food obtained from the, i. 426 

 Bristle fern, structure and habitat of, i. 361 

 Bromine, i. 18 



whence obtained, i. 18 



properties of, i. 20, 22 



Professor Schonbein's views as to, i. 20, 21 



spectrum of, i. 21. 



amount of absorption of radiant heat by, i. 41, 42, 43 



atomic weight of, compared with that of hydrogen, i. 100 



spectrum analysis of, i. 140 

 Bryei, characters and structure of the, i. 329 

 Bryopsis, structure and habitat of, i. 219, 224 

 Bryozoa, or Polyzoa, characters of, ii. 218 

 Buckthorn, green dye obtained from, i. 124 

 Buds of trees, structure and functions of, i. 411 

 Bugularia avicularia, structure of, ii. 220 

 Bulbous plants, beauty of, i. 387 



