which await their notice. Certain classes of natural products have received much atten- 

 tion from many chemists; others may be the private province of a single laboratory or 

 even completely ignored. 



Dr. Ernest Sondheimer has prepared Chapter 10 and given valuable advice through- 

 out the rest of the book. Preparation of the manuscript commenced while I was a member 

 of the Department of Bacteriology and Botany, Syracuse University, and I am grateful for 

 the time away from my regular duties which was granted me to work on it there. Thanks 

 are also due to all my present colleagues and former teachers whose knowledge and en- 

 couragement really made this book possible; to Mrs. Cecile Gitlin and Mrs. Viva Rice 

 whose expert typing and good humor expedited preparation of the manuscript; and finally 

 to my wife and children who were of no help to the book but lots of fun to live with. 



Trevor Robinson 



Amherst, Mass. 

 August 1, 1962 



11 



