314 



Nature-Study Agriculture 



U. S. D. A. 



FIG. 254. Breed as well as feed makes a difference in egg production. The 

 average yearly production for each of 2000 hens entered in a contest was 151 eggs. 

 The average yearly production of the common hen is 85 eggs. (Basket at left 

 contains 151 eggs; that at right, 85.) 



W. T. SUlling 



FIG. 255. One year's feed for a hen, and her egg production. Based on prices 

 in your neighborhood, what are the values of the "raw materials" and of the 

 "finished product"? 



