28 
APPARATUS. 
pears, and before it has time to injure itself by 
attempting to escape. Such as are inclosed in 
a hard case, as the Puss moth, {Cerura 
Vinula,) &c. should, when near the time of 
coming forth, be carefully freed from it, as the 
plumage of the moth is often injured when 
left to itself. The breeding cage should be 
kept in a cold damp place.* 
16. 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 in depth, 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 sepa- 
rate jar, and lightly covered with decayed 
wood ; and those taken from dung may also 
have a separate jar, and some dung placed over 
them, and kept slightly damp, but not wet. 
Another jar may be kept for the grubs and 
maggots found in dead animals or animal mat- 
ter. The jars should be frequently examined, 
to secure the perfect insects. Some of the 
* In case of a sudden influx of caterpillars, tumblers, 
flower pots, bat boxes, &c. covered with gauze, may be 
called into active service. 
