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quito control measures have not been kept separate from the 

 records for the prosecution of the general sanitary measures in 

 these various countries. It must be borne in mind that mosquito 

 control in the tropics is very largely a matter taken up with 

 the prime object of eradicating disease, either yellow fever or 

 malaria, while in most of the sections with which we are most 

 familiar the prime object is the securing of comfort and the 

 raising of real estate values by increasing the desirability of any 

 section, both for home sites and for agricultural purposes, through 

 the abolition of the mosquito. 



I will speak first of the expenditure for mosquito control work 

 in Panama. The Chief Health Officer of the Zone advises me 

 that the cost of anti-mosquito work in the Canal Zone, exclusive 

 of the Christobal District, was approximately $63,000 for the 

 fiscal year 1914—1915. The average population was 311,000, 

 which would make the cost of anti-mosquito work in the Canal 

 Zone 5 mills per capita per day, or about $1.75 per capita each 

 year. These figures agree very closely with the estimates of 

 Gen. Gorgas, former Chief Sanitary Health Officer of the Zone, 

 and now Surgeon-General of the United States Army, and with 

 the actual expenditures for anti-mosquito work during the past 

 years since such work was undertaken at the beginning of the 

 digging of the Canal. It must be borne in mind, however, that 

 the charge of $1.75 per capita each year in the Panama Canal 

 Zone includes expenditures which are not required of the Mos- 

 quito Extermination Commissions in New Jersey. For instance, 

 considerable screening work was done in Panama, necessitating 

 the employment of carpenters, etc., and fumigation and other 

 measures taken which are not ordinary expenses of the Mosquito 

 Commissions of New Jersey. The pay of the men in the Pan- 

 ama service is also somewhat higher than the pay of men in the 

 New Jersey mosquito extermination work, as is shown by com- 

 parison of an estimate of Gen. Gorgas' for the cost of carrying- 

 on anti-mosquito work in a town of 30,000 representing 1 some 

 6,000 houses. The monthly estimate is as follows: 



