EXPERIMEXTAL STATIONS — EEPOET FOR 1880. 



371 



higher than that contained in the dry matter of the yellow 

 turnips, and the percentage of non-nitrogenous food matter is 

 just about the same in both. The ratio of nitrogenous to non- 

 nitro(?enous constituents, or what is usually called the oiittricnt 

 ratio, is in the swedes about 1 to 10|, and in the yellows about 

 1 to 12. The dry matter of swedes is therefore a more valuable 

 feeding material than that of yellow turnips, and when we con- 

 sider that the proportion of dry matter contained in swedes is 

 much greater than that contained in yellow turnips, we are led 

 to the conclusion that 10 tons of swedes may be equal in feed- 

 ing qualities to 13 tons of yellow turnips; but this is a 

 matter which can be determined far more accurately by actual 

 feeding experiments than by calculations derived from analysis. 

 Eeturning to the question of undissolved versus dissolved 

 phosphates, we obtain the following results in regard to food 

 material per cent, and per acre grown on the phosphate plots. 



