PREFACE 



are offered to investigators whose contributions have been 

 omitted. 



The experimental studies could not have been carried out 

 without the devoted help of a number of former students 

 and colleagues, and I wish to express my very sincere ap- 

 preciation to Drs. Henis, Jucker, Liu, Lucas, Marco, Miller, 

 O'Leary, Panos, Sax, Tausig, Yoho, Young, and the late Dr. 

 Orochena for their untiring efforts. I also wish to express 

 my thanks to Professors Axelrod and Jeffrey of the Univer- 

 sity of Pittsburgh for many helpful discussions. 



This little book will fulfill its mission if it stimulates 

 further inquiry into the neglected but intriguing field of 

 microbial lipid metabolism. 



K. HOFMANN 



Pittsburgh, Pennsylvania 

 April, 1963 



