Part 7

Diatomaceæ 114

Fungi, mould, mildew, &c. 116

Coral reef, fertilisation of 118

Vegetables, composition of 118

" feed on the air 119

" the food of animals 119

" mode of growth 120

" action of light and heat on 121

Seeds, germination of 122

Growth, promoted by rain 123

Endosmose, experiment on 123

Carbonic acid decomposed by

plants 124

Sap, course of 124

Vegetables, position they hold 125

" compared with radiata 126

" description of parts of 127

Leaves, forms of 130

Corolla, forms of 132

Stamens, arrangement of 133

Fruit, forms of 134

Inflorescence, forms of 136

Vegetable kingdom, divisions of 139

Acrogenæ 141 Algæ 141 Fungi 143 Lichens, ferns 144 Liverworts 145 Mosses, various 146 Horsetails 147

Endogenæ 147

Bamboo, applications of 152

Endogenæ, orders of 154 Grasses 154 Sedges, Arums 155 Bull-rush, Colchicum 156 Lily, Narcissus 157 Crocus, Orchids 158 Naiads, Flowering rushes 159 Water Plantain 160

Exogens 160