ACKNOWLEDGEMENTS 



The authors are indebted to the following named persons for their 

 kind assistance in the designated phases of this study. Drs. C. L. Mar- 

 tin and J. H. Gillespie aided in the examination of chicks hatched for 

 the identification of degree of severity of gizzard lesions in the progeny 

 from the various protein fed groups. Mr. P. A. Wilcox and Mr. D. W. 

 Flagg aided in the feeding, weighing, and general care of all birds 

 throughout the course of the experiment. 



