CONTENTS 

 CHAPTER III 



PAGE 



(continued) . .. . . . .. -15 



Classification of soils . . . . . 15 



Examination of soils . . . .18 



Heavy and light soils . . . , . 19 



Power of holding moisture ... 19 



Chemical composition of soils . . . .20 



The atmosphere . . . . . . .22 



Active and dormant constituents . . . .24 



The double silicates . . . . . 25 



CHAPTER IV 



PLANT LIFE . . . . . . . - 27 



The root ... . 27 



The stem % . . 28 



The leaves .... . . 28 



The flowers .... . . 29 



Fertilisation by winds ... . . 32 



Fertilisation by insects . 



The seed . . \ \ 35 



The embryo . . . . -35 



Germination .... . 36 



Nutrition of plants ... -37 



Composition of plants ... 38 



CHAPTER V 



PLANT LIFE (continued] . . . . . - 41 



Propagation of plants . . . ."".". -41 



Seeds ...... .41 



Bulbs and tubers ....... 42 



Runners . . . . ... 43 



Suckers . . . . . . . . 43 



Layers . . . . . . -43 



Division . . - . , . . .44 



Cuttings . . . . . . . -44 



CHAPTER VI 



CLIMATE . 46- 



