4 JANUARY. 



therein the roots of such plants as contain larvae, which 

 require the plant to be kept in a growing state ; a few 

 round tin canisters, about nine inches deep by five in 

 diameter, with lids whose rims slip on outside the cases, 

 and with the whole circumference of the lids cut out 

 to within about half-an-inch of the edge ; also a box for 

 rearing the pupae of Micro- Lepidoptera, as follows : 



11 Obtain one or more boxes of any convenient length 

 or breadth, but not less than six inches in depth (either 

 divided into compartments or not), and fitted with a 

 lid, having a large space cut out of it to within an inch 

 of the margin ; this open space to be covered with 

 either close wove wire or old calico affixed with thin 

 glue. In the bottom of the box, or of each compart- 

 ment, bore with a centre-bit one or more holes, about 

 two-thirds of an inch in diameter ; cover these with 

 pieces of perforated zinc, tacked down ; place on the 

 bottom of each box or compartment moderately-large 

 pebbles or sea-gravel, to the depth of about half-an- 

 inch, and on this again, to the depth of two inches, the 

 earth, on which to lay the pupae, composed of garden- 

 mould, silver sand, and thoroughly rotten wood from 

 the heart of an old tree; on this, after being made 

 smooth, distribute your pupae in such a manner, ac- 

 cording to their size, that when covered none are more 

 than half-an-inch below the surface, and cover the 

 surface of the mould with a layer of moss, about half- 

 an-inch thick. The inside of the box should be rough, 

 and the box itself should be raised on pieces of wood, 

 or have pieces of wood fixed to the bottom in such a 

 manner that it may stand clearly above the floor. 



" By this arrangement you may damp your pupae 



