INDEX. 



ABSORPTION, 5 

 amount of, 9 

 by leaves, 25, 27 

 by routs, 19, 20 

 of gases, 25, 26 

 of water, 25 

 Alcohol, 28 

 Ammonia salts, 12 

 action of, 107 

 and mineral salts, 108 

 and nitrate, 108 

 Annuals, 35 

 Anthers, 87 

 Apogeotropism, 56 



BACILLUS, 28 

 Bacteria, 12, 21 

 Barley, 14, 126 

 Bast-cells, 23, 47 

 Battle, The, of life, 94 

 Beet, 16, 110, 127 

 Branches, 36 

 Buds, 36 



Bud -formation, 85 

 Bulbs, 37 

 Bundles, woody, 47 



CABBAGE, 120 

 Cambium, 45, 46 

 Carbon, 25 

 Carbonic acid, 25 

 Carnivorous plants, 29 

 Caulicle, 76 

 Cells, 7 



bast. 47 



growth of, 43 



their nature, 7 



wood, 47 

 Cereals, 16, 90, 92, 110 



Cereals, fertilisation of, 90, 131 

 Changes, chemical, 92 



in plants, 11, 138 

 Chlorophyll, 7, 23, 26 



degeneration of, 122, 134 

 Circumnutation, 51 

 Climbing plants, 69 

 Clover, 10, 98 



Alsike, 92 

 Color, 122 

 Colza, 81 

 Contact, 58 



action on leaves, 66 

 roots, 58 

 stems, 69 

 Cotyledons. 76 

 Cross-breeding, 88, 131 



DEATH, 132 

 at leaf, 135 

 at root, 135 

 from frost, 65 

 heat, 65 

 injury, 134 

 starvation, 134 

 suffocation, 135 

 Decay, 132 

 Deoxidation, 28 

 Development, 72 

 Diffusion, 6 



conditions of, 8 

 Drainage water, 125 



EMBRYO, 76 



formation of, 76, 88 

 Endogens, 47 

 Epidermis, 2;$ 

 Evaporation, 80 

 Exogens, 47 

 Eyes, 37 



