260 INDEX. 



Balanus culcatus,. structure of, ii. 213-215 



Baldness caused by fungi, i. 275 



Balms, chemical combination forming the principle of the, i. 97 



Bamboo, size and structure of, i. 386 



Bangia, characters of the genus, i. 222 



Bangia ceramicola, structure and mode of reproduction of, i. 223 



Bangia ciliaris, structure and reproduction of, i. 223 



Bangia fuscopurpurea, structure and reproduction of, i. 223 



Barium, i. 3 



one of an isomeric triad with calcium and strontium, i. 105 



spectrum analysis of the rarefied vapour of, i. 142 



effect of high temperature, i. 143 



chloride of, spectrum of, i. 146 

 Bark of trees, structure of, i. 406, 407 



Baryta, green coloured light obtained by the combustion of, i. 133 

 Batarrea, structure of, i. 267 

 Batrachospermese, habitat and structure of, i. 210 

 Bean, common, fungus of the, i. 280 

 Beans, caseine obtained from, i. 125 

 Beer, yeast of, i. 287 

 Beetles, fungi in the stomachs of, i. 274 

 Begonia, structure and mode of reproduction of, i. 376 

 Bengal, Bay of, causes of the scarlet colour of the, ii. 72 

 Benzol, combination forming, i. 118, 127 



constituents and characteristics of, i. 121 



chemical composition of, i. 128 



Bergamot, amount of radiant heat absorbed by the perfume of, i. 44 

 Beroe Forskalia, structure of the, ii. 102, 103 

 Bhang, whence obtained, i. 427 



intoxicating effect of, i. 427 

 Biddulphia pulchella, structure of, i. 198 

 Bignonia, fructification of, i. 381, 382 

 Bilin, polishing slate of, of what it consists, i. 206 

 Biscay, Bay of, zones of Algse in the, i. 259 

 Bisection, propagation of diatoms by, i. 200, 204 

 Bismuth, diamagnetism of, i. 75, 76 



chloride of, spectrum of, i. 146 

 Bittern, i. 18 

 Bleaching properties of: 



chlorine, i. 19 



bromine, i. 20 



iodine, i. 21 



