go 
3. Place a plug of cotton wool in the mouth of 
the tube. 
4. Transfer to the large bottle by placing the 
tube over the mouth of the bottle and withdrawing 
carefully the cotton wool. Keep the bottle closed 
with a plug of cotton wool. 
To Breed Out Mosquitoes 
(Fig. 34 ) 
Collect a number of full-grown larvae and nymphae 
of both Anofthelines and Culicines. 
1. Separate the nymphae from the larvae and 
place them in a jar or wide-mouthed bottle half-full 
of water, leaving room for the insects when hatched. 
Cover the jar with a piece of thick cardboard or a lid, 
the central portion of which is replaced by mosquito 
netting. 
2. Place the larvae where they will receive 
plenty of light, but will not be subject to great heat. 
3. Remove the nymphae as they are seen at the 
end of each day. 
To Keep Mosquitoes Alive 
The length of time mosquitoes remain alive in 
captivity depends almost entirely upon the suitability 
of the conditions under which they are kept. 
N.B.—Except for special purposes, mosquitoes (especially Anophe- 
lines) should not be kept in cages, i.e., frames covered with mosquito 
netting, as the mortality is immense. 
Procure several ‘ chutney jars 5 with hollow glass 
stoppers. 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. 
