of rabbit, 222 Box leaves, 44, 45 Bracken fern, 184, 189 Bracts of anemone, 97, 99; of daisy, 111; of dandelion, 113; of lime, 152, 154, 155, 174 Branches, position of, 45, 47 Breast bone, of pigeon, 269; of rabbit, 217, 223, 227 Breathing, definition of, 242; necessity for, 241; of cockroach, 355; of crustaceans, 376, 377; of fresh-water mussel, 381; of frog, 333, 337; of mammals, 242, 243; of snails, 382, 383; of tadpole, 344 Breathing organ of chick-embryo, 289, 294 Broad bean seed, 1, 2, 5 Broccoli, 96 Broom, 101 Brussels sprouts, 96 Bud, a typical, 55, 58 Buds, 55, 69; bursting of, 56, 61, 64; of ash, 153, 156; of horse chestnut, 57, 63; of sycamore, 56, 60; position of, 45, 50 Bulb, 81, 84 Burrows of earthworms, 384, 385 Buttercup, 96, 97; family, 96, 97 Butterflies, cabbage-white, 362, 365 Calamites, 196 Calceolaria, 116 Calyx, 90 Cambium, 72 Candytuft, 94 Canine teeth, 246, 248, 255 Capillaries, 237, 240 Capsule, 168 Carbon, contained in plants, 31, 33; contained in starch, 32 Carbon dioxide, formed by living body, 240, 241; formed when flesh burns, 240, 241; formed when wood burns, 31; in air, 31, 33 Carnivores, 254 Carpel, 96, 98 Carrot, 96, 108 Castings of earthworms, 384, 386 Cat, 246, 250, 252, 254 Catkin, 146 [Pg 429] Catkins, of alder, 142, 149; of beech, 142, 148; of birch, 142, 148; of hazel, 142, 149; of oak, 141, 144, 145; of poplar, 151; of willow, 150, 151 Caterpillar, of cabbage-white butterfly, 362, 365; of tiger-moth, 364, 369; of vapourer-moth, 364, 370 Cauliflower, 96 Celery, 108 Centipedes, 378 Cephalothorax of crab, 373, 376; of crayfish and lobster, 373, 375 Cherry, 103, 105, 106; fruit of, 175, 179 Chestnut, horse, 38, 42, 47, 57, 63, 65, 157, 159; Spanish or sweet, 148 Chick, development of, 286, 289; education of, 295, 296; embryo of, 287, 289; hatching of, 294, 295 Chitin, 251 Chrysalis, 366 Claws of cat, 247, 251 Cleavers, 175, 177 Climbing stems, 75 Clitellum of earthworm, 383, 386 “Clock” of dandelion, 112, 171, 172 Clover, 101, 102 Cockroach, 349, 351; habits of, 356; life-history of, 356; position of in insect class, 357; structure of, 355 Cocoon of earthworm, 386; of tiger-moth, 364, 369 Coleoptera, 362 Collar of mushroom, 203, 205; of garden snail, 379 Collecting, 389, 390 Colour, of flowers, 93; of fruits, 182 Compositae, 114 Cone-bearing trees, 160, 161 Cones of alder, 149; of horsetail, 191, 192, 194, 195; of larch, 161, 163; of Scotch pine, 160, 162, 171, 174; of spruce fir, 163, 171, 174 Convolvulus, 76, 78, 79 Cork, 75 Corm, 81, 85 Corolla, 91 Corona, 120, 122 Cotyledons, 13, 16, 22, 23; of bean, 2, 6 Cowslip, 109, 110 Crayfish, 372, 374 Creeping stems, 80, 82 Cress, 94, 96 Crocus corm, 81, 85 Crop of pigeon, 271
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