INDEX 



Absorption of carbon - dioxide, 

 55 



— of oxygen, 72 



— of water, 3 



Acid, hydrooliloric, 11, 58 



— presence in root, 11 



Air, absorption of food from, 43 



— a factor in gertoination, 87 



— composition of, 33, 42 



— presence in plant, 43, 44, 45 

 Ammonia, 50 



Animals, feeding process com- 

 pared with plants, 67 



Baek, 20 



Bast, 20 



Breathing process, 70 



— — significance of, 78 



Calcium chloride, 24 

 Cane sugar, 58, 59 

 Carbon assimilation, 56, 80 

 Carbon-dioxide, 39 



— absorption of, 55 



— evolution of, 71 



— preparation and properties of, 



41 

 Carmine, 10 

 Caustic potash, 54 

 Centre of gravity, 97 

 Cobalt chloride, 27 

 Copper sulphate, 50, 58 

 Cortex, 20 

 Culture solutions, 12 



Diastase, 62 



Direction of growth, 89, 95 



Direction of growth, action of 



light on, 91, 92, 93 

 action of moisture, 94 



Elements, 2 

 Energy, kinetic, 79, 84 



— potential, 79, 84 

 Eosin, 10 



Feeding process, animals and 



plants compared, 67 

 Food, a factor in germination, 

 83-86 

 — ■ storage in seeds, 86 



Gases, tests for, 32 

 Geotropism, 99 

 Germination, 81 

 — ■ factors necessary, 82-89 



— necessity for water, 82 



— necessity for food, 83, 84, 85 



— necessity for air, 87 



— necessity for light, 87 



— necessity for life, 88 



— necessity for heat, 89 



Gbaee sugar, 58, 59 

 Gravity, force of, 96 



— centre of, 97 



— elimination of, 97 



— action on growth, 98, 99 

 Ground-tissue, 20 

 Growth, 81 



— direction of, 89 



— region of in root, 103 



— region of in shoot, 105_^ 

 Guard-cells, 29 



109 



