86 COMPANION TO TROPICAL READERS 



almost upright; these are the kind that cause malarial 

 fever. 



FLIES 



Expt. 218. Dirty Habits of Flies. Observe that flies 

 crawl over animal excreta, and over decomposed vege- 

 table matter; observe, also, that they often fly direct on 

 to food for human consumption. 



Expt. 219. How to trap Flies. Three-quarters fill 

 a tin or glass with strong soap water; take a piece of 

 bread or thick paper, make a small hole in the centre, 

 and put a circle of jam or molasses around the hole on 

 one side of the bread. Now place the bread over the 

 mouth of the glass, having its hole over the centre of 

 the glass, and the circle of jam on the under side next to 

 the soapsuds. Expose where flies are common. 



Expt. 220. To prevent Flies breeding. Burn all 

 rubbish, and have stable manure buried or removed. 

 Keep closets constantly disinfected with earth, lime, 

 and ashes. 



FLEAS AND BUGS 



Expt. 221. Fleas on different Animals. Catch fleas 

 from as many animals as you can. 



Expt. 222. Fleas breed in Dirty Rooms. Observe 

 that fleas are most common in rooms that have been left 

 unclean for a long time. 



Expt. 223. How to destroy Fleas. If opportunity 

 arises, try the following methods of destroying fleas: 



(a) Clean floors with Cjdlin, Jeyes, tobacco decoction, 

 or dumb-cane. 



(b) Wash pet animals (e.g. dogs) with tobacco decoc- 

 tion and soap; hand-pick and kill fleas while they are 

 still stupefied after the washing. 



