ENTOMOLOGY

CONTROL OF THE HOUSE FLY AND RELATED FLIES 163all places where flies congregate, as markets, eating places, packinghouses, etc., the liberal usc of good fly traps is a very good measure. Asbaits for such traps the following suggestions have been made.1. Milk.!!. Overripe or fermenting bananas, crushed and placed in the baitpan.3. Bananas and milk are better than either separately.4. A mixture of S parts water, 1 part molasses, is good after it hasfermented for a day or two.FIG. S5.-Conical hoop fly trap; side view. A, Hoops forming frame at bottom. B,Hoops forming frame at top. 0, 'rop of trap made of barrel head. D, Stripsaround door. E, Door frame. F, Screen on door. 0, Buttons holding door. H,Screen on outside of trap. I, Strips on side of trap between hoops. J, Tips ofthese strips projecting to form legs. K, Cone. L, United edges of screen formingcone. M, Aperture at apex of cone. (Bishopp.) From Farmer's Bull, U. S.Dept. Agr., No. 784, flgs. 5, 1.5. A mixture of equal parts brown sugar and cheese or curd of sourmilk, thoroughly moistened, is good after it has been allowedto stand three or four days.6. Mucous membrane from the lining of hogs' intestines is attractiveto blow-flies and other meat-infesting flies, as well as the housefly. This is available for fly traps at packing houses.7. Ordinary fish and meat scraps.S. Moistened garbage.These baits are of little value if allowed to dry out. It is not uncommonto sec fly traps standing out in the sun near garbage cans, with noflies within but plenty of flies around, and the bait dried out by thesun. The fly trap must be more attractive than its surroundings. Whenbaits are used which will permit of the development of maggots in them,