. Circular. Insect pests; Insect pests. congregated in immense numbers. The different stages of the insect are well illustrated in the accompanying figures (figs. 1-3), and need no description. Taschenberg, in his Praktische Insektenkunde (iv, 1880, 102-107), gives a good popular account of the house fly, but leaves the impres- sion that the duration of a generation is much longer than we have indicated. He also states that the female lays its eggs on a great variety of substances, particularly on spoiled and moist food stuffs, decaying meat, meat broth, cut melons, dead animals, in manure pit
. Circular. Insect pests; Insect pests. congregated in immense numbers. The different stages of the insect are well illustrated in the accompanying figures (figs. 1-3), and need no description. Taschenberg, in his Praktische Insektenkunde (iv, 1880, 102-107), gives a good popular account of the house fly, but leaves the impres- sion that the duration of a generation is much longer than we have indicated. He also states that the female lays its eggs on a great variety of substances, particularly on spoiled and moist food stuffs, decaying meat, meat broth, cut melons, dead animals, in manure pits, on manure heaps, and even in cuspidors, and open snuffl>oxes. The fact remains, however, that horse manure forms the principal ' Jmni'/i breeding j^lace. REMEDIES AND PREVENTIVES, A careful screening of win- dows and doors during the sum- mer months, with the supple- mentary use of sticky fly papers, is a preventive measure against house flies known to everyone, and there seems to be little hope in the near future of much relief by doing away with the breeding places. A single stable in which a horse is kept will supply house flies for an extended neighbor- hood. People living in agricul- tural communities will probably never be rid of the pest, but in cities, with better methods of disposal of garbage and with the lessening of the number of horses and horse stables consequent upon electric street railways, bicycles, and horseless carriages, the time may come, and before very long, when window screens may be discarded. The prompt gathering of horse manure, which may be variously treated or kept in a specially prepared recep- tacle, Avould greatly abate the fl_v nuisance, and city ordinances com- pelling horse owners to follow some such course are desirable. Abso- lute cleanliness, even under existing circumstances, will always result :n a diminution of the numbers of the house fly, and in fact most household insects are less attracted to the premises of what is known as t
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