217 



fact, the percentage is almost certainly higher than 

 this. At this rate Imperator gives 24'7 per cent. 

 digestible matter, or 4 tons 18 cwt. on a crop of 20 

 tons." 



The specific gravities, and the amount of digestible 

 nutritive constituents, would differ from these to some 

 extent were the potatoes grown on peaty or boggy 

 soils, but these afford a fair illustration, being grown 

 on moderately dry loams. 



LONDON : PRINTED BY WYMAN AND SONS, LIMITED, FETTER LANE, B.C. 



