232 



ANlSfTJAL REPORT SMITHSONIAN INSTITUTION, 1964 



The Canal Zone Biological Area also has authority to use a small 

 amount of land on the adjacent mainland, near Gamboa, Canal Zone. 

 This mainland territory is covered by various types of second-growth 

 vegetation and patches of forest which are more humid than the forest 

 on Barro Colorado Island. 



The bureau maintains a small but well-equipped laboratory on 

 Barro Colorado Island, with attached library and living quarters, 

 available for use by scientists and students from all over the world. 



The scientific staff of the bureau conducts research on several groups 

 of animals and plants on Barro Colorado itself, in adjacent regions 

 of the Canal Zone and the Republic of Panama, and in other parts 

 of Central and South America. 



Table 2. — Comparison of 1962 and 1963 rainfall, Barro Colorado Island 



[In Inches] 



RESEARCH ACTIVITIES 



Ninety scientists and students visited Barro Colorado Island for at 

 least several days and/or made use of bureau research facilities on 

 the mainland last year. This represents a slight increase over the 

 preceding year. The increase would have been larger had it not 

 been for the reports of local civil disturbances which caused an 

 appreciable number of scientists to cancel their proposed visits. For- 

 tunately, the disturbances did not actually impede the day-to-day 

 operations of the bureau. 



