INDEX. 



PAGE 



Absorbing power of roots ... 68 



Absorption, of water by plants . 62 



of ammonia bv plants . . 62 



Acids . . . ." 12 



Acids, bases, and salts .... 12 



Adhesion 14 



Age of the earth 27 



Agriculture, effect of .... 78 



Air, composition of 41 



necessary for roots . . . 101 

 purified by plants .... 61 



Albuminoids 118 



Alkalies 13 



Alum 17 



Alumina 23 



Aluminium 23 



Alluvial soil 32 



Amides 119 



Ammonia .... 11, 13, 18, 21 

 absorbed by foliage ... 62 



carbonate of 82 



formation of .... 81, 82 



Ammonic chloride 13 



Animal heat 117,140 



Animals, remains of .... 37 



breeds of 139, 140 



care of 140 



composition of bodies of. . 114 



health of 138 



kindness to 140 



nature of 138 



young ... ,, .... 116 



Apatite 85 



Application of fertilizers ... 89 

 Application of manure .... 94 



Arteries, the 136, 137 



Artificial fertilizers 83 



PACK 

 Ash of animal bodies .... 116 



of food 120 



Atmosphere 31, 41 



weight of 42 



Atomic theory 8 



Atoms 8, 11 



Balanced ration .... 124, 125 



Barometer 43, 44 



Bases 12, 13 



Beans 62 



Beets 63 



Biennial plants 62 



Blight 69 



Blood, the 136, 137, 138 



Blue litmus 66 



Bodies of animals . . 114, 115, 116 



Bones as a fertilizer 84 



Bone-black 84 



Bowlders, origin of 34 



Breathing 137 



of plants 61, 62 



Breeds of animals . . . 139, 140 



Breezes 45 



Brimstone 24 



Buttercups, roots of 63 



Calcareous soil 39 



Calcium 23 



carbonate 23 



hydrate 86 



oxide 19,86 



phosphate 22 



Calyx 74 



(147) 



