SUBSTITUTIONAL DIETING 



77 



and doing severe work, are: 



15 x-^, or 19*5 lbs. 



digestible starch, with a nitrogenous ratio of ^-^ to ^. 



Thus the original ration is deficient in total nutritive 

 units, and at the same time unnecessarily nitrogenous. 



Now let us substitute 5 lbs. of maize for 5 lbs. of the 

 oats, and the figures become — 



Here, again, the total nutritive value is below the 

 standard, and the protein excessive, so that a further 

 substitution of 5 lbs. maize for 5 lbs. of the oats can be 

 made, with the figures — 



