LOUIS FREEDMAN 29 



ACKNOWLEDGMENT. 



I wish to express my sincere appreciation to Professors 

 W. J. Gies and E. G. Miller, Jr., of the Department of Biological 

 Chemistry, for their valuable advice and criticism in the prep- 

 aration of this dissertation. I also wish to express my gratitude 

 to Dr. Casimir Funk, of the Department of Biological Chemistry, 

 who suggested the problem and under whose painstaking guid- 

 ance this work was done. 



I also take this opportunity to express my acknowledgment 

 and thanks to the Hon. Herman A. Metz, who extended many 

 facilities to me in this work and gave me the opportunity of com- 

 pleting my dissertation while engaged in research in his 

 laboratory. 



