PUERTO RICO AGRICULTURAL EXPERIMENT STATION, MAYAGUEZ 
[Under the supervision of the Office of Experiment Stations, United States Department of Agriculture] 
James T. Jardine, Chief, Office of Experiment Stations 
STATION STAFF 
T. B. McClelland, Director. 
H. L. Van Volkenberg, Parasitologist. 
R. L. Da\ is, Agronomist. 
J. O. Carrero, Assistant Chemist. 
A. Arroyo, Minor Scientific Helper. 
J. Brunet, Minor Scientific Helper. 
A. Diaz, Assistant Field Aid. 
C. Alemar, Jr., Principal Clerk. 
