lOO 



3. Any mosquitoes that may have died in 

 the night can be recovered, and are not dried up. 



4. It is an extremely convenient way of 

 obtaining and examining the ova. 



5. Mosquitoes which have become feeble are 

 given the best possible chance of living, and will 

 be found resting all day on the piece of paper. 



If boxes and net -covered frames be used, an 

 enormous mortality usually results. The dead 

 bodies dry up and get lost in the folds of netting, 

 or, unless special precautions are taken, are eaten 

 up by ants. 



If chutney jars with hollow stoppers cannot 

 be procured : — 



Procure any form of wide-mouthed jar or 

 bottle, such as a prune jar, preserved fruit bottle, 

 etc. Insert a piece of stout cardboard as before. 



1. Prepare the metal top of a screw-top 

 bottle or some other suitable small receptacle 

 with water, cork, and paper as above. Place upon 

 a square piece of very stout cardboard or wood. 

 Invert the jar over this (Fig. 28). 



2. Prepare a saucer by adding a few tea- 

 spoonfuls of water and placing on this cork and 

 paper. Invert the jar over the saucer. This is 

 rather more convenient than the last mentioned 

 method, as mosquitoes are less liable to escape in 

 the process of lifting the bottle. 



To Feed Mosquitoes 



Select a bottle in which the mosquitoes (twenty 

 to thirty, or at least a dozen, in each bottle) are 

 ;eady for feeding, i.e., the second evening after 

 hatching or collecting. Lift the bottle from the 



