INDEX. 



151 



WARINGTON'S chemical researches, 

 26; "Chemistry of the Farm" 

 quoted, 30 ; chemical analyses 

 of, 57, 58 



Warmth, influence on soil, 18 



Wash, 131-135 



Wash-tank, 134, 135 



Waste products, utilized in distil- 

 lation, 133 



Water, composition of, 3 ; influ- 

 ence on root-growth, 18, 19 ; 

 constituents soluble in water, 

 30 ; amount in cane-juice, 85 ; 

 boiling-point under various press- 

 ures, 104 ; coal consumed in 

 evaporation of, 110 ; amount in 

 molasses, 122 



Watercourses, mould from, 54, 55 



Wax, amount in cane-juice, 85 



Weather, influence on soil, 15 et 

 seq., 18, 32 



Weeding, beneficial effects of, 48, 

 50, 51 



Weeding-machines, 39, 51 



West Indies, economy of purchas- 

 ing manures for, 67 ; conditions 

 necessary to success of sugar in- 

 dustry in, 111 



Wheat, consumption of plant-food 

 by, 22 ; value of manure pro- 

 duced from its consumption by 

 cattle, 64 



Wood ashes, value as manure, 

 68 



Woolly pyrol, value as green dress- 

 ing, 65 



YEAST-PLANT, growth of, 128, 129 ; 

 development arrested by alcohol, 

 131 ; necessity of plant-food 

 for, 136 



