. Guide leaflet. le is the heart of the matter. A few earnest individuals or well-meaning Improvement Societies, by themselves, can do little morethan cause a great deal of trouble and very little good. Laws mustbe made and enforced so that the ignorant or careless may not makeof little or no avail the work of the intelligent and careful. Since 90 flies out of every 100 are probably born in a manurepile, the elimination of the natural breeding places of the fly means,first and foremost, the proper care of stable manure. Stables shouldnot have dirt floors, since it has been shown
. Guide leaflet. le is the heart of the matter. A few earnest individuals or well-meaning Improvement Societies, by themselves, can do little morethan cause a great deal of trouble and very little good. Laws mustbe made and enforced so that the ignorant or careless may not makeof little or no avail the work of the intelligent and careful. Since 90 flies out of every 100 are probably born in a manurepile, the elimination of the natural breeding places of the fly means,first and foremost, the proper care of stable manure. Stables shouldnot have dirt floors, since it has been shown that the ground moistenedby animal discharges contains many larva; and pupse. Floors shouldbe water-tight, preferably of cement, and constructed so as to drainfreely into a sewer or covered cement pit. In wooden floored stablesflies should be excluded from the ground beneath the floor left for ventilation should be screened with wire and noholes should be bored in the floor for drainage of Fig. 1 1. MODEL SHOWING A GOOD TYPE OF MANURE BIN American Museum of Natural History The surface of the manure is being sprinkled with a chemical to prevent fly breeding. 20 fNSECTS AND DISEASE It has generally been recommended that the manure itself shouldbe kept in a dark vault or pit from which flics arc shut out by in a tight covered box. The health officer of Asheville, N. ( an unusually successful anti-fly campaign has been carried out,believes that screening of manure has been over-emphasized andthat tightly floored boxes and thorough and complete cleaning up ofthese floors at frequent intervals are the main desiderata. I le pointsout that most manure already contains fly maggots when placed inthe bin and that an elaborately screened bin is hard to clean sothoroughly that development may not take place in the manure leftbehind. A method of storing manure which is specially applicable tomilitary camps depends on the fact that flies cannot bree
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901
