The Isthmus in 1904 23 



could be obtained, and it was decided to begin 

 work at the camps that were first to be occupied 

 by the laborers and American forces. It was 

 thought also that oiling of wet areas would be 

 attended with less successful results than in the 

 Cuban campaign, because the rainfall of the 

 Isthmus was often sufficiently continuous to re- 

 move all traces of oil before it had had much 

 effect on the mosquito larvae. When pathways 

 were cut through the jungle new mosquito pro- 

 ducing areas were found. 



The statistics of the days of the French Canal 

 Company are incomplete, and include only a 

 portion of the deaths due to malaria, as only cases 

 in hospitals, or patients able to pay for hospital 

 treatment, were recorded. 



In the city of Panama, which was not so badly 

 infested with Anopheles as Colon, the malaria 

 sick-rate and death-rate were high. The number 

 of deaths recorded as due to malarial fever was : 



Date Number of Deaths Population 

 From 1884 to 1893 20,000 to 



inclusive 3504 22,000 



1885 687 20,276 



During 1906, the year of highest malaria sick- 

 rate of the American period of occupation, 'among 



