1098 Rural School Leaflet 



Injury and control. — House flies are known to be carriers of typhoid 

 fever, cholera, dysentery, and other intestinal diseases, and are there- 

 fore very dangerous insects to allow in the house. 



All stable manure should be drawn to the fields once a week, or put in 

 a dark, tight room or pit. The closet or outhouse should be tight so that 

 no flies can enter it. The windows to kitchens and other rooms should 

 be screened against flies. Flies should be caught in traps or on tanglefoot 

 paper, or killed with formalin baits. Two tablespoonfiils of formaldehyde 

 (40 per cent) in a pint of equal parts of milk and water, set about the room 

 in plates, will attract the flies and kill many of them, provided there is no 

 other food or water for them to feed on. A piece of bread placed in the 

 middle of each plate for the flies to alight on will make the bait more 

 attractive. A constant warfare should be maintained against house flies. 



Editors' note. — Ask your teacher to let you see the illustrations of the 

 mosquito and the house fly in the various stages of their development. 

 They can be foimd on pages 147 and 148 of the September leaflet. 



An adult housefly. Much enlarged 



