31 



The above feed stuffs are divided into protein and starchy feeds. 

 The former are purchased primarily to increase the protein, while 

 the latter are bought to increase the digestible matter in the ration 

 fed to the animal. 



How to use the Key. 



It is not possible in this connection to show the relative effects of 

 the variolis feed stuffs on the flow of milk or the production of 

 beef. The figures are offered rather as a key to the comparative 

 commercial values of the different feeds based on the nutriments 

 contained in them. Thus if corn meal is worth loo, Quaker dairy 

 feed would be worth S4 ; or if wheat bran is worth 86, cottonseed 

 meal would be worth 152. These figures can be easily converted 

 into dollars. Thus if corn meal is worth $18 per ton or 100, Quaker 

 dairy feed would be worth 84 per cent of $18 or $15.13, the amount 

 the farmer can afford to pay for the feed. Again with cotton- 

 seed meal worth $25, what can the farmer afford to pay for 

 old process linseed meal.'' Cottonseed meal equals 152, or S25, 

 and linseed meal 138. We have a case in simple proportion. 

 152 : 138 : : $25 : x = $22.70, the value of a ton of linseed meal. 

 It must not be forgotten that these figures do not take into consid- 

 eration the mechanical condition, or the particularly fa\orable 

 effect which some feeds are supposed to exert upon the general 

 health of the animal. 



