446 Digestibility of Palm Kernel Cake, etc. 



The "food units" included in the table are calculated by the con- 

 ventional expression and are designed to furnish a measure of the relative 

 money values of the feeding-stuffs, whilst the starch equivalents give 

 a measure of their feeding value when added to a maintenance ration. 

 These data indicate that the palm kernel cake was a little superior to 

 the meal both in money value and in feeding value, whilst its superiority 

 over the cottonseed cake was roughly 20 per cent, in money value and 

 60 per cent, in feeding value. These comparisons naturally have 

 reference only to the materials actually used in the experiments. 



Nitrogen Balance. 



Although not essential for the estimation of digestibility it was 

 thought desirable throughout the experiments to collect the urine 

 voided by the sheep and determine the nitrogen therein. A complete 

 survey of the utilisation of the food nitrogen was thus obtained, and is 

 summarised in Table IX : 



