FLY 



22:51 



FLY 



catch in traps than at almost any other time. 

 If every family in a community would in the 

 early spring days get rid of every fly about 

 the premises there would be no summer cam- 

 paign, and nodnday meals could be eaten on 

 unscreened porches with pleasure and with 

 safety. 



Next, breeding-places should be done away 

 with, so far as possible, by providing proper 

 sanitation and by banishing all unnecessary 

 garbage and rubbish. Refuse should be buried 

 or covered with kerosene and burned. Out- 

 side slop barrels should be scalded, and in 

 communities where domestic animals are raised 

 care should be taken to have them and the 

 premises kept in a sanitary condition. Much 

 of this work can be done by families in and 

 about their homes; much remains to be done 

 by the public authorities, who can best be 

 urged to a proper conception of their task by 

 enlightened public opinion. Indeed, it may be 

 said that only as community feeling is aroused 



market and the butter and milk it gets from 

 the dairies are contaminated by their pres- 

 ence? 



The Active Fight. If the work of preven- 

 tion by means of killing winter flies and de- 



EXLARGED HEAD OF A FLY, FRONT VIEW 

 The two large areas studded with thousands 

 of lenses are compound eyes. There are three 

 simple eyes at the top, in the center ; the fly can 

 therefore see in every direction. 



can really effective work be done, for what 

 good does it do a family to rid its own home 

 of flies so long as the meat it gets from the 



THE FOOT OF A FLY 



(a) Lower joints of the foot, one hundred 

 sixty times actual size. 



(6) The part of (a) shown within the dotted 

 area, magnified 1,500 times its actual size. The 

 deadly typhoid bacilli are shown on the tip. The 

 drawing is reproduced from a photograph. 



stroying breeding-places is begun early enough, 

 it is all-sufficient ; but even if a few flies have 

 been allowed to reproduce themselves and their 

 descendants in their turn have been allowed 

 to breed, the fight is not yet hopeless, though 

 it is rendered more difficult. 



It remains but to catch the flies as soon 

 as possible after they have emerged, before 

 they have reached the egg-laying stage; for it 

 is well to remember at every stage of the cam- 

 paign that the fly must feed for two weeks 

 before it can lay its first eggs. And these 

 young flies should be caught out-of-doors, be- 

 fore they have had time to carry filth germs 

 into the house. Somewhere near every house, 

 whether it be in the city or in the country, 

 there is a garbage pail the flies' favorite 

 feeding-ground. Now if, as they swarm about 

 this, they can be coaxed by some especially 

 attractive bait into a trap which stands above 

 the garbage pail, the work is done, in large 

 measure. Then if another trap be placed out- 

 side the screen door, and another in the stable 

 window or barnyard, it is not likely that many 



