INTRODUCTORY EDITORIAL NOTE 



On April 17, 1956, Dr. Harry J. Deuel, Jr., passed away following the 

 recurrence of a serious illness for which he had been operated upon in 1954. 

 After the operation he maintained as his chief professional objectixe the 

 completion and publication of this third volume of his work The Lipids, 

 Their Chemistry and Biochemistry. Before his death he had done most of 

 the necessary writing. It remained for some of his colleagues and friends to 

 see this written material through the press. 



The entire text of this third volume had been completed by Professor 

 Deuel se\-eral months before his return to the United States from England, 

 where he was lecturing under the auspices of the United States Educational 

 Commission in the United Kingdom, and on the continent, during the 

 winter of 1955-1956. 



During his last months in England the material of the latter half of the 

 volume was being typed and checked in Los Angeles. These latter chap- 

 ters were reviewed by Dr. Deuel's friends and associates before being for- 

 warded to the publisher. For the most part, however, this material has 

 been left unchanged so the vohmie is consistent ^^^th the style and or- 

 ganization of the first two volumes and in accord ^^ith the author's inten- 

 tions. Certain minor corrections of details have been made to bring the 

 material up to date beyond the time when it was originally written. 



The bibliographic research and the technical work of preparing the manu- 

 script for the publisher was carried out by Mrs. Margaret Ritter who ful- 

 filled the same responsibilities for Volumes I and IL 



Chapters VIII, IX, X, XI, XII, and XIV were reviewed by Dr. Roslyn 

 B. Alfin-Slater and Dr. Ernest Geiger; Chapter XIV was also read by Dr. 

 Wendell Griffith. Chapter XIII was revised by Dr. Raymond Reiser from 

 an article written by Dr. Deuel and Dr. Reiser and previously published in 

 Vitamins and Hormones, 13, 29-70, 1955. Dr. James Mead also made 

 several suggestions for the revision of this chapter. Gratitude is hereby 

 expressed to the Academic Press for permission to use the material forming 

 a large part of this chapter of the present volume. 



We would also like to thank Mrs. Joanne Forney, Mrs. Helen Rice, and 

 Mrs. Marie Visser for typing the final manuscript. Dr. Lilla Aftergood for 



