32 



1 Health Officer, 



10 Sanitary Inspectors, 



2 Clerks, 



1 Chief Carpenter, 



2 Carpenter Foremen, .... 

 i Head of Cleaning Squad, 



4 Foremen, 



i Chief of Ditching Squad, 

 i Foreman, 



6o Laborers, 



Monthly Salaries. 

 Bach. Total. 

 $400 00 $400 00 



Material, 



125 00 1,250 00 



125 00 250 00 



125 00 125 CO 



75 00 150 00 



125 00 125 00 



75 00 300 00 



125 00 125 00 



75 00 75 00 



30 00 1,800 00 



400 00 400 00 



Total, 



$5,000 00 



The total of $5,000 per month or $60,000 per year would 

 represent a per capita cost on the estimated population of 30,000 

 people of $2.00 per capita per year, slightly higher than the 

 actual figure just given, namely $1.75. 



In 1903 and 1904 Rio de Janiero, in Brazil, commenced anti- 

 mosquito work, and to the best of the writer's knowledge their 

 annual appropriation, $1,650,000, has been granted for anti-mos- 

 quito work in Rio. The aim here is the same as in Panama, 

 namely, the elimination of yellow fever and malaria, and as in 

 Panama, on account of the warm climate, work must be carried 

 on throughout practically all twelve months of the year. Rio 

 has. a population of 800,000 or 900,000 people, which brings the 

 cost per. capita on the above annual appropriation to about $2.00 

 per capita or about $4,000 per square mile, based' on the 430 

 square miles of land surface in this city. So much for the large 

 scale tropical mosquito work, the cost of which has been $1.75 

 per capita on an average. 



The smaller campaigns in tropics show as follows : 



At Port Said and Ismalia, in the Suez Canal Zone, anti-mos- 

 quito work has been prosecuted for the eradication of disease at 

 a cost per capita for the 50,000 people in Port Said, of 12 cents 

 per annum:, and in Ismalia, a village of 10,000 people, where 

 the houses are further apart and the natural conditions are 

 harder for prosecuting mosquito work than in Port Said, at a 

 per capita cost of 50 cents per annum. These figures, however, 



