14 



Cages will also be necessary for rearing the 

 grubs or maggots found in dung, rotten trees, 

 &c. The best thing for this purpose is a stone 

 jar, of about a foot deep, and three or four 

 inches in diameter, having a tin lid made to fit 

 very close, and perforated with minute holes to 

 let in the air. The grubs taken from old trees 

 may be placed in a separate jar, and lightly co- 

 vered with decayed wood -, and those taken from 

 dung may also have a separate jar, and some 

 dung placed over them. For the caterpillars 

 which feed on the roots of grass, a separate jar 

 may be half filled with mould, and the cater^ 

 pillars covered with a turf of grass ,- the top 

 of this jar should be tied down with coarse can- 

 vass. The two last mentioned jars should be sunk 

 into the earth, so that the surface may be exposed 

 to the different changes of weather, but should be 

 secured against too much moisture. Another 

 jar might be kept for the grubs and maggots 

 found in dead animals or animal matter. The 

 jars must be frequently examined to secure the 

 perfect insects. 



Some of the wafer bit^s ("VeJia Ttii-ulornm and 



