598 Bulletin 318 



however, with the Plymouth Rocks. In that case the weak pen greatly 

 exceeded the strong pen in the profit at the end of the year. This con- 

 dition is due principally to the high mortality in strong pen 21. The 

 cause of this mortality seems to have affected also the production of 

 the remaining strong fowls, as shown by their product falling below the 

 value of the weak pen. This difference between the strong and weak 

 Plymouth Rocks was sufficient to bring the true average balance profit 

 of all the strong pens below that of the weak, even though the average 

 value of the eggs produced by the strong was the greater. In omitting 

 the loss by death from these calculations the strong pens would show 

 a decided profit over the weak, instead of a loss. 



It is interesting to note that although the Plymouth Rock hens, strong 

 and weak, laid more eggs during the second year than did the White 

 Leghorns, yet because of the lower food consumption the Leghorns 

 materially exceeded the Plymouth Rocks in the actual balance profit. 



The value of the eggs from the second year of feeding was nearly as 

 great as that from the first, and with the food consumption about the 

 same the balance profit should have been nearly equal for both years. 

 The increased price in grain during the second year, however, made the 

 balance profit less than that of the first year. 



