120 



SOILS AND PLANT LIFE 



cumulated in the kernels as to make them hard and 

 doughy. 



94. The Forms and Uses of the Various Food Materials 

 in the Seed. — As the food accumulates within the seeds, 

 part of it assumes the form of grains, or granules, which 

 often resemble to some extent minute oyster shells ; and 

 inclosed in certain parts of some seeds, oil may be seen 

 in the form of tiny droplets. A person who has made a 

 careful study of the subject can detect adulterations in 



Courtesy Iowa State College. 



Fig. 41. — X feed lot scene. 



foodstuiTs, such as corn meal in wheat or buckwheat flour, 

 or ground peas or beans in ground coffee, by the form of 

 the starch and protein grains. 



A good stock raiser knows the use of the various kinds 

 of food stored in the seeds. He knows that protein builds 

 tissue, and must be provided in considerable amounts for 

 growing animals and milch cows ; and furthermore, he 

 knows that foods containing starch, sugars, or fats and 

 oils, yield heat and muscular energy and produce fat if 

 fed in excess, — but that they \\\\\ not build tissue. 



The ration for his growing pigs and milch cows includes 



