11 



or coarse canvass ; the door should be as large 

 as possible. In this may be set a small garden 

 pot (placed in a pan), and filled with vegetable 

 mould and rubbish,\vhich may be got from rotten 

 trees, having a wide-mouthed phial of water 

 placed in a tin tube, and sunk into the mould to 

 receive the food. An old snuff canister will 

 answer very well, and the phial may be removed 

 when it is necessary to change the water, with- 

 out disturbing the earth, which may be kept 

 moist, by occasionally pouring a little water in- 

 to the pan. The mould is for those caterpil' 

 lars which change to the chrysalis state under 

 ground. Common garden pots, three parts 

 filled with mould, and having three sticks 

 placed at equal distances, to support a piece of 

 gauze, and tied round, make very good breeding 

 cages. The mould should be four or five 

 inches deep. But if it be the wish of the 

 collector to ascertain precisely the moth that 

 proceeds from each caterpillar, an excellent cage 

 invented by my friend Mr. Stephens, will answer 

 the purpose to a great extent ; a figure of which, 

 by his kindness, will be found in the plate, fig. 



