Acknowledgements 



It is a pleasure to aeknowledge all those who helped in this 

 venture: Mr. Nixon Smiley, Director, and Mr. S. Kiem, Superin- 

 tendent, of the Fairchild Tropical Gardens, for their .special care 

 in providing facilities conducive to di.scussion; Miss H. Schapiro, 

 Mr. B. Fritzie, Mr. H. Fernandez, Mr. D. Stafford, and Mr. E. 

 Zaharowicz, graduate students of the University of Miami, for their 

 help throughout the symposium; Mr. R. Conklin of the Miami Sea- 

 quarium, for being a generous host to the participants and their 

 families; Mrs. N. Jaffe, Mrs. E. Hirshhorn, Mr. J. Bovaird, and Mr. 

 H. Reasor, who, in addition to their regular responsibilities, con- 

 tributed in the preparation of the recorded discus.sions and of the 

 index of this volume; Dr. B. Strehler, for his most helpful sugges- 

 tions in expediting publication; Drs. E. Muscatine and E. L. Cham- 

 bers, for their many suggestions; and Dr. R. }. Boucek of the Howard 

 Hughes Medical Institute, for his encouragement and for providing 

 facilities for arranging the symposium. Finally, we wish to express 

 our deep thanks to every participant of the symposium for his 

 cheerful cooperation in responding to our seemingly endless requests 

 for corrected manuscripts, di.scussions, and galleys. 



