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glass stoppers. These can be obtained generally 

 from the native bazaar in India for a few annas 

 (Fig. 28). This form of jar is very convenient, 

 but any other jar will serve. 



Cut a piece of thick cardboard so that it will, 

 when forced down into the jar, remain supported 

 on the shoulders of the jar. 



Fig. 28. Method of keeping Mosquitoes alive 



Fill the stopper nearly to the brim with water. 

 Cut a thin slice of cork and place it on the surface 

 of the water. Upon the cork place a piece of clean 

 white paper. The paper should not quite occupy 

 the whole of the space in the mouth of the stopper. 



I. Invert the chutney jar (prepared as above) 

 over the top of a jar in which some mosquitoes 

 have hatched. Remove the cardboard and gently 

 tap the glass. The mosquitoes will fly upwards 

 into the chutney jar. Place the chutney jar con- 

 taining mosquitoes upon its stopper prepared as 

 above. 



