140 



INDEX, 



FALLOW, 127 



Farmyard manure, 112, 125, 126 

 Feeding of plants, 2 

 Ferments, 12, 77, 79 

 Fertilisation, 86 



cross, 88, 131 



of cereals, 90 

 Fibre crops, 120 

 Flowers, structure of, 87 

 Foliage crops, 120 

 Form of leaves, 22 



as dependent on growth, 48 



of roots, 18 



of steins, 35 

 Frost, action of, 64 

 Fruits, ripening of, 82 



GASES, absorption of, 25 



emission of, 25, 27 

 Geotropism, 56 

 Germination, 43, 46, 78 

 Germs, 12 

 Glucose, 28, 77, 79 

 Grasses, 16, 35, 95, 98 



cereal, 16, 90, 110, 131 



pasture, 98 

 Gravitation, effects on roots, 56 



effects on stems, 67 

 Growing points, 44 

 Growth, 42, 73 



of cells, 43 



of leaves, 47 



of roots, 45 



of stems, 46 



HAY, 15, 92 



Heat, action on leaves, 64 



on roots, 57 



on stems, 69 



(See also Temperature) 

 Heliotropism, 62 

 Hops, 70, 89 

 Hybridisation, 91 



IMPROVEMENT of plants, 129 

 Inheritance, 75 

 Iron, 14 



LEAVES, 21 



absorption by, 25 

 action in darkness, 27 

 of contact on, t>6 



Leaves, action of gr ivity on, 61 

 of heat on, 64, 66 

 of, in light, 26 

 of light on, 62 

 of moisture on, 64 

 fall of, 137 

 feeding by, 24 

 forms of, 2? 

 functions of, 33 

 growth of, 47 

 movements of, 55 

 parts of, 22 

 sleep of, 63 

 structure of, 98 

 Leguminosae, 97, 100 

 Light 



action on leaves, 62 

 roots, 57 

 stems, 68 

 Ligule, 22 



Lime, action of, 14. 106 

 Liquids, 39 

 ascent of, 39 

 pressure, 40 



MALTING, 79 

 Mangel, 110, 127 

 Manures, 15, 125 

 absence of, 103 

 ammonia, 107 

 change of, 111, 113 

 disuse of, 111 



ettects of, 16, 74, 104, 113, 114 

 farmyard, 112, 125, 126 



disuse of, 111 

 mineral, 105 



with ammonia, 108 



nitrate, 110 

 nitrate of soda, 107 

 potash, 13 

 di*use of, 112 

 substitution of, 113 

 superphosphate, 106 



with ammonia, 1''8 

 Manuring, principles of, 15 

 Maturation, 80, 82 

 Me:istem, 45, 46 

 Moisture, a-tion on roots, 58 

 Molecules, 5 

 Movements, 49, 55 

 of growth, 49 

 of leaves, 54 

 of protoplasm, 50 

 of seedlings, 54 



