Mosquitoes and Yellow Fever 141 



introduced there sooner or later and the results 

 are sure to be most appalling. The climatic and 

 sanitary conditions and the habits of the people are 

 ideal for the development and spread of the disease, 

 and what I have seen of the conditions on some of 

 these islands convinces me that it would be almost 

 impossible to control the disease before it had a 

 chance to kill a large percentage of the population. 



With the opening of the Panama Canal these 

 things become more possible. Heretofore, the 

 shipping to these regions has not been from ports 

 where yellow fever was endemic or even likely to be 

 epidemic. But unless the yellow fever is kept out 

 of the canal zone, the danger will be many fold what 

 it is now. 



The white man has already carried enough 

 misery to these island peoples in the way of loath- 

 some diseases, and it is to be hoped that this, an- 

 other great curse, will not be carried to them with 

 our civilization, the beneficial results of which 

 have been so often very justly questioned. 



What I have said in regard to these islands ap- 

 plies with equal force and in some instances with 

 even greater force to parts of Asia, the Eastern 

 Archipelago and other places. 



