. Elementary biology, animal and human. Biology. INSECTS 55 if communities will iDut take the trouble to eradicate all breeding places of mosquitoes. Since the moscjuito, during its development in the water, comes frequently to the surface to secure air for breathing, a thin film of oil spread over the surface of the water in which they are breeding is a sure means of killing them. But the kerosene treatment is at best but a temporary means of ridding a community of ihos-. FiG. 38. — Staten Island marshes before drainage. quitoes. The oil has to be renewed every two or three weeks, especially
. Elementary biology, animal and human. Biology. INSECTS 55 if communities will iDut take the trouble to eradicate all breeding places of mosquitoes. Since the moscjuito, during its development in the water, comes frequently to the surface to secure air for breathing, a thin film of oil spread over the surface of the water in which they are breeding is a sure means of killing them. But the kerosene treatment is at best but a temporary means of ridding a community of ihos-. FiG. 38. — Staten Island marshes before drainage. quitoes. The oil has to be renewed every two or three weeks, especially after rains, to make sure that a continuous film covers the surface. Hence, wherever possible, pools should be drained, and one has but to read Dr. Doty's account of his marvelous success in abating the mosquito nuisance on Staten Island (see New York State Journal of Medicine, May, 1908) to be convinced that this method is effective (Figs. 38 and 39). Every householder should cooperate by. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Peabody, James Edward, b. 1869; Hunt, Arthur Ellsworth, joint author. New York, The Macmillan company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiology, bookyear1912
