1 84 FOODS [chap. ix. 



however, it will be found that the prices depend upon 

 very different conditions, mainly of a commercial 

 character, hence the grazier who values out the feeding 

 stuffs on offer before purchase can generally obtain a 

 substantial advantage. In a subsequent chapter, how- 

 ever, it will be shown that such a basis of comparison is 

 only of value when dealing with concentrated foods ; a 

 more accurate basis of judgment is afforded by the 

 starch equivalents which will then be explained. 



