REFERENCES 365 



parts of an inch, quarters, for example, may be used) appearing on 

 the left side. The numbers on the side iadicate the height of the 

 leaf. A mark for the next larger should be placed above number 2, 

 in the upper right-hand corner of the square opposite its height, and 

 so on. Draw a line connecting these points. The horizontal tendency 

 of the line represents the law of heredity ; its vertical tendency, the 

 law of variation. 1 



REFKRENCES 



The Feeding of Animals. Jordan. . 

 Feeding Farm Animals. Shaw. 

 Principles of Breeding. Davenport. 

 Management and Feeding of Cattle. Shaw. 

 Farmers' Bulletins. Washington, D.C. 



22. The Feeding of Farm Animals. 



170. Principles of Horse Feeding. 



251. Cheap Dairy Rations. 



305. Roots and Cabbages for Stock Food. 



1 This statement is not strictly accurate since heredity and variation refer 

 to the likeness or unlikeness between ancestors and offspring. The method 

 of procedure, however, were the materials as available, would be the same as 

 above. 



