9 1 
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 lid and gently tap 
the glass. The mosquitoes will fly upwards into 
the chutney jar. Place it upon its stopper prepared 
as above. 
Place the whole, after labelling, in a dark cup¬ 
board or other convenient place (incubator). 
At the end of the first day or so, the males will 
be found dead upon the piece of paper, and can be 
removed. On the second night after hatching, most 
of the insects will feed, and the jar is ready for use. 
2. Place the inverted jar, prepared with card- 
