170 



INDEX. 



PEAT, foniiation of 



charcoal, preparation of , 



ashes, composition of .. . 



Plants, materials from which they 



are formed 



inorganic matters in 



Potash, preparation of 



sulphate of 



carbonate of 



Potassium .* * ' 



Phosphoric acid 



Peruvian Bark,' quinine in 



Potato, wild 



Peat, composts of r^ 



Poudrette . .-". 



'AGE 



92 

 148 

 149 



]9 

 42 

 43 

 27 

 43 

 43 

 47 

 51 

 95 

 166 

 HI 



. n:,< 



. 112 



QUARTZ 83 



Quicklime ^ 155 



RAPE dust as manure 



Refuse of the Glue manufacture. 



lime of gas-works 



River water, solid matters in . . . 

 Rotation of crops 



SAP, course of , 



Sandstone formation 



Saijd, coral 



Silica and Silicates 



Seeds , 



as manure 



Stem, composition of the . , 



Salts defined 



Soils, materials existing in 



formation of 



transported 



Soot, composition of 



151 

 141 

 165 

 37 

 101 



70 

 87 



163 

 46 

 63 



151 

 65 

 26 

 80 

 79 

 82 



167 



Sewage, composition of 



value of, as manure . 



Starch, composition of 54 



sugar  . . 55 



use of 119 



varieties of 53 



Sodium* 44 



Soda, and compounds of 43 



SulpTiuric'acid 47 



action of, on bones 137 



Sulphuret of Iron in soils 158 



Shell-sand, composition of 162 



Sugar, composition of 56 



TAFFO 110 



Trap, or Volcanic rocks 89 



Testing 26 



Test-papers 26 



URINE, how appUed 127 



of man, composition of . . 108 



animals, composition of 11 4 



Urea, Nitrogen in 108 



Urate, how prepared Ill 



VEGETABLE Casein..... 57 



Fibrine 57 



Acids 60 



Albumen 58 



WATER, composition of 



materials supplied 



to 



plants by 40 



Wool of the sheep, sulphur in ... . 47 



Woollen rags as manure 141 



Woody fibre 52 



Wheat, oil in 60 



THE END. 



