OCR Text |
Show Hot Oil Employed to Vipe Ov.1 Mcsqulioei Hot fuel oil, sprayed along the shores of the lakes in the Canal zone, is a most efficacious weapon against malaria-laden mosquitoes. This oil, a big factor in the fight which is culminating cul-minating in certain abolition of the insect, in-sect, has destroyed breeding places in-the in-the Pedro Miguel and Gatum lakes. The method used to spray the oil necessitates the use of a rowboat carrying car-rying a tank containing 150 gallons of oil, and a crew of three men. One man rows, one works a baud pump and the other handles the spray nozzle. noz-zle. The hot oil Is sprayed on the shore line as fast as the boat can bu propelled. This surface filming bas been found positive and complete. Wind action and wavelets carry the oil into every nook and cranny, even to a considerable distance from the point of application. A rigid inspection inspec-tion follows every oiling to determine if It has been done thoroughly. Elsewhere than in the lake areas, mosquito breeding is controlled chiefly by training of streams and by draining and filling. |