-2- 



Staff biologists who have been engaged in diatom work and have 

 contributed to the preparation of this manual include, Carol Scott, 

 Julia Maloney, Albert Katko, Mary Jo Sage, Louis Grivetti, Ronald 

 Raschke, Mason Fenwick, Lydia Corrill, and Gretchen Oswald. 



Cornelius I. Weber, Ph.D. 

 In Charge, Plankton Studies 



