298 



INDEX 



Valuation, of feeding stuffs, 183, 



213 ; of fertilisers, 267 

 Vetches, 138 

 Virgin soils, 54, 144 



Water, in plants, 2 ; required by 

 crops, 39, 107 ; cultures, 45 ; as 

 a weathering agency, 79 ; as 

 a transporting agency, 82 ; in 

 animal body, 171, 172, 174 



Waxes, 5 



Weathering of soils, 79 



Weeds, 34 ; seeds in oilcakes, 181 



Wheat, root, 43 ; development of, 

 61 ; effect of wet autumn on, 62 ; 

 "strong," 65, 156; in wet and 

 dry seasons, 67 ; manurial require- 

 ments of, 162, 263 ; as food, 182 



Whey, 273, 285 



Wilting, 46 



Wind, as a transporting agency, 82 ; 

 breaks, 1 14 



Wollny, 38 



Wood ashes, 257 



Wool, 203 



Work, done in animal body, 172, 

 I73» 189; energy converted to, 

 186 ; done in walking and trot- 

 ting, 198 



Worms, action of, 85 



Yeast, 75 



Zein, 204 



Zuntz, 191, 197, 198 



OLIVER AND BOYD, EDINBURGH. 



