Buds, unfolding of, 72, ~62~ Bulbs, 77, ~68~ Bulrushes, 151, ~138~ Bulrushes, rhizome of, 161, ~143~ Bur, fruit of, 90, ~86~ Buttercup, flower of, 82, ~76~ Buttercup, water-, 159, ~141~ Butterwort, 115, ~112~ C Cactus, 2, 62, ~48~, 99 Calcium phosphate, 15 Calcium sulphate, 15 Calyx, 79, ~70~ Canadian water-plant, 21, ~13~ Capsule of moss, 139, ~131~ Capsule of poppy, 89, ~85~ Carbon, 19, 23 Carbonic acid gas, 6, 19, 24, 27 Carex, 166, ~146~ Carpel, 82, ~76~, ~77~, ~78~ Carrot, 55, ~38~ Caustic potash, 20, ~12~ Cells, 92, ~91~ Cherry flower, 82, ~78~ Cherry fruit, 88, ~82~ Cherry leaf, 64, ~50~ Cherry leaf arrangement, 69, ~58~ Cherry stipules, 64, ~50~ Chlorophyll, 17, 24, 27 Circulation of water, 28 Climbing plants, 104 Climbing assisted by roots, 106, ~101~ Climbing by tendrils, 107, ~104~, 108, ~105~ Climbing by twining stem, 106, ~102~, 107, ~103~ Clover attacked by dodder, 110, ~106~, ~107~ Club-moss, 137 Coal, 153, 178 Collecting, 194 Colour of petals, 80 Cones of pine, 127, 128, ~123~ “Control plant,” 16 Convolvulus, twining of, 106, ~102~ Cork, 95 Cornflower, 121, ~122~ Cotyledons of bean, 9, ~4~ Cotyledons of pine, 129, 130, ~126~ Cotyledons of rose, 66, ~54~ Cow-wheat, 113 D Dahlia, roots of, 56, ~39~ Daisy, flower of, 121, ~121~ Dandelion, fruit of, 88, ~83~ Darkness, effect on growth of, 38, ~27~ Dead nettle, 68, ~56~, 149, ~137~ Deserts, 100 Dicotyledons, 126 Distilled water, 15 Ditches, 150 Dodder, 110, ~106~, ~107~ Downs, 183 Duckweed, 151, ~139~, 161 Drowning, of trees, 185, ~154~, ~155~ E Elder tree, twig of, 96, ~96~ Elodea, 21, ~13~ Embryo, 9 Excursions, 194 Eyebright, 113 F Ferns, bud of, 134, ~127~ Ferns, family of, 133 Ferns, fossil, 179, ~152~, 181 Ferns, prothallium of, 135, ~129~ Ferns, spore-cases of, 135, ~128~ Ferns, “sporeling” of, 136 Flowers, 78 Flowers in relation to insects, 118 Flowering family, 125 Food-building in leaves, 23 Food materials, 14, 18 Food solutions, 15 Fossils, 179, ~151~ Fossils, tree, 180, ~153~ Foxglove flower, 119, ~117~ Foxglove in hedges, 146, ~Pl. IV.~ Fruits, 86 Fucus, (~see also~ Bladderwrack), 173, ~Pl. VII.~ Fungi, 109 Fungi, spores of, 143 Fungi, structure of, 142, ~133~ G Goose-grass, leaves of, 69, ~60~ Goose-grass, fruit of, 90, ~87~ Gorse, 102, ~99~ Gorse, flowers of, 119, ~119~ Grass, leaves of 66 Grass, roots of, 54, ~37~ Gravitation, 44 Growth, 40 Growth, direction of, 41, ~29~, 43, ~30~ Growth, region of, 40, ~28~ H Hairs, 96 Harebell, 78, ~69~ Heather, 154 Hedges, 147, ~Pl. IV.~ Holly, 54, ~36~ Honeysuckle, leaves of, 68, ~57~ Hop, 106 Horse chestnut, buds of, 72, ~62~ Horsetail, leaves of, 69, ~59~ Horsetail, family of, 137 I