PREFACE 



The papers included in diis volume were presented at a sym- 

 posium on algal cultures held during the third annual meeting 

 of the Phycological Society of America, New York City, Decem- 

 ber 27-28, 1949. Because of the increasing amount and kinds of 

 interest in the culturing of algae, both in this country and abroad, 

 it was hoped that the symposium papers might be collected and 

 printed under one cover. Dr. Edward M. Redding, Director of 

 Research for the Charles F. Kettering Foundation, appreciating 

 the contributions made by the symposium, generously arranged 

 for subsidizing the publication of these papers by that organiza- 

 tion. The American Phycological Society and researchers in the 

 various fields of phycology everywhere are grateful for the assis- 

 tance that has made this volume possible. The Editors wish to 

 thank Dr. S. H. Hutner of the Haskins Laboratories, New York 

 City, for his appropriate Introduction to the Symposium Papers. 



