296 
ANNUAL REPORT SMITHSONIAN INSTITUTION, I&IQ'. 
It will be seen from this that there are two wet and two dry 
seasons, though these are not very sharply defined. The long dry 
Fig. 2. — The colony of British Guiana. 
season from August to November is usually to be depended upon, but 
the other seasons vary. On the lower Essequibo the rainfall may 
