First Sanitary Work 279 



man on the force. The scheme worked out well, 

 although at first, in the weeding-out process, many 

 changes occurred in the force. 



Reinspection was continued throughout the 

 entire campaign, to prevent unsatisfactory condi- 

 tions in any district. A record of every house 

 was kept, and those in which mosquito larvae 

 were apt to be found most frequently became 

 known to the department, and were watched more 

 closely. These house records showed the number 

 of wells, tanks, cisterns, barrels, etc., within each. 

 In order to eradicate these sources of mosquito 

 production, a force of carpenters was employed 

 to make mosqmto-proof covers for them, and 

 another gang to attach the covers to the containers. 

 After they were placed, it became the duty of 

 the inspectors to report any that had been detached 

 or tampered with. When a cover was taken off 

 a barrel or well, the water container was considered 

 a menace to health, and was removed or destroyed. 

 All containers not absolutely necessary were re- 

 moved, and properly disposed of. The exami- 

 nation of the larger water containers, tinajas, 

 open-top stone filters, etc., in dark corners of the 

 houses, consumed much time. These vessels 

 were listed, that none might be missed, and 

 inspectors had to report the condition of each 



