. Civic biology; textbook of problems, local and national, that can be solved only by civic coöperation. Biology. 114 CIVIC BIOLOQY wet, fermenting matter, auimal or A^egetable. The maggots are hard to kill; they will live for an hour or more in pure kero- sene oil and for over half an hour in alcohol. Tobacco kills many insects, but house flies have been bred from the snuff on a druQ^o-ist's counter. This means that as lonof as there are flies about, they will find something in which to breed, and that, with stables and barn- yards, gutters, roadsides, and acres of pastures, with accidental a
. Civic biology; textbook of problems, local and national, that can be solved only by civic coöperation. Biology. 114 CIVIC BIOLOQY wet, fermenting matter, auimal or A^egetable. The maggots are hard to kill; they will live for an hour or more in pure kero- sene oil and for over half an hour in alcohol. Tobacco kills many insects, but house flies have been bred from the snuff on a druQ^o-ist's counter. This means that as lonof as there are flies about, they will find something in which to breed, and that, with stables and barn- yards, gutters, roadsides, and acres of pastures, with accidental accumulations, lawn clippings, compost and rotting weeds and fer- menting garbage, preven- tion of breeding by doing away with breeding places and materials is beyond human possibility. It is easy in comparison to exter- minate the breeders them- selves. Still, proper disposal of all this waste matter comes to be a problem of greatly increased importance when we attempt to prevent flies from breeding in it. If material becomes infested with eggs or maggots, the best treatment of it is probably to turn it out in the hot sunshine and dry it as completely as possible. If this cannot be done, the maggots may be killed by saturating the material with a solution of iron sul- phate (copperas), two pounds to the gallon of water. Treatment of stables with chloride of lime has been recommended, but this is expen- sive and disagreeable, and the fumes (chlorin) are likely to injure the animals. Stiles has buried infested material six feet deep and found that the flies work their way out. For the farm home the cost of han- dling is doubled and fertilizer value reduced from 55 to 69 j^er cent by. Fig. 57. Member of Junior Sanitary Police of Cleveland Photograph by Df. Jean Dawson. 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
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