SECRETARY'S REPORT 93 



Dr. Pieter J. A. L. de Lint joined the research staff as visiting 

 plant physiologist from Wageningen, the Netherlands. Dr. Konstan- 

 tinos Mitrakos also joined the Division as visiting physiologist and 

 biochemist from the University of Thessalonika, Greece. 

 Eespectfully submitted. 



Fred L. WiiirPLE, Director. 

 Dr. Leonakd Carmichael, 

 Sec^'etary^ Smithso7uan Institution. 



