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AGRICULTURE 



NOTE TO THE TEACHER. The following problems are optional, 

 and, if assigned, they should be divided into several lessons. They 

 are solved in the same way as the example just given, and may be 

 supplemented by original problems requiring calculations of rations 

 for any class of animals, using the foods most common in any locality. 

 Rations consisting largely of cotton seed and cotton-seed meal cannot 

 be made to approach very closely to the standards. They will contain 

 an excess of protein and fat and not enough carbohydrates. But they 

 are satisfactory in the South, where the extra protein is cheap. 



If it should be desired to increase the number of problems and to 

 make them apply to larger or smaller animals, the proportions of pro- 

 tein, fat, etc., would be unchanged, but the total amount of each food 

 would be, for example, four fifths as much for an animal weighing 800 

 pounds as for one weighing looo pounds. 



Helps in teaching feeding and in working such problems may be had 

 from bulletins from your state experiment station, or from those of the 



