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 Bugula avicularia, structure of, ii. 220 Bulbous plants, beauty of, i. 387 Bulbous plants, structure and reproduction of, i. 388 Bunt, germination of the spores of, i. 281 C Cadmium, i. 4 spectrum of volatilized cadmium, i. 64 chloride of, spectrum of, i. 146 Cæomacei, structure and mode of reproduction of, i. 278 Cæsium, i. 3, 4 atomic weight of, compared with that of hydrogen, i. 100 one of an isomeric triad with rubidium and potassium, i. 105 M. Bunsen’s discovery of the metal by spectrum analysis, i. 134, 135 mode of distinguishing it from potassium, i. 136 its properties, i. 136 changes in its spectrum by high temperature, i. 144 Caffeine, the neutral crystallisable principle of coffee, i. 428 Caladium distillatorium, water secreted by at night, i. 429 Calanus, structure and social habits of the, ii. 206 bloody water formed by the, ii. 206 Calanus pontilla, structure of, ii. 206 Calanus sanguineus, structure of, ii. 206 Calcarina, intermediate skeleton of, ii. 42, 43 Calcium, i. 3, 4 one of an isomeric triad with strontium and barium, i. 105 spectrum analysis of the rarefied vapour of, i. 142 effect of high temperature, i. 143 chloride of, spectrum of, i. 146 Caliciei, characters and habitat of the order, i. 309 Calicium inquinans, spores of, i. 309 Calicium tympanellum, organs of reproduction of, i. 301 Calico-printing, use of oxalic acid in, i. 116 Callithamnion, structure of the genus, i. 231 Callithamnion corymbosum, structure and reproductive organs of, i. 231, 232 Callithamnion sparsum, structure of, i. 231 Calorescence, property of, in some solids and liquids, i. 61 Calyx of flowering plants, i. 378 Cambium of plants, structure of, i. 407, 417 Camptosorus, or walking fern, structure and mode of reproduction of, i. 352 Campylopus lamellinervis, leaves of, i. 330 Canada, enormous quantities of petroleum in, i. 126 Caoutchouc, whence obtained, i. 426 Carbazotic acid, constituents of, i. 121 Carbohydrates, combinations forming the, i. 116 Carbolic acid, combination forming, i. 107, 120, 121, 128 its property of arresting putrefaction, i. 121 becomes solid when dried and purified, i. 121