NOVEMBER. 261 



removed to their proper place in the cabinet. The best 

 method of arranging insects is in cohimns, with the generic 

 name at the head of each column, and the specific affixed 

 beneath the insect. A different drawer or box for each 

 order is desirable for the young student, but not indis- 

 pensable : and these arrangements must depend on means, 

 and increase with his increasing collection. Two of each 

 insect, particularly in Lepidoptera, should be procured, if 

 possible, to exhibit both the upper and under side. Should 

 an insect become mouldy, a brush dipped in spirits of wine 

 in which a little camphor is dissolved, will clean it ; but the 

 insect must be dried before being replaced in the cabinet. 

 Camphor in the drawers is very necessary to prevent the 

 attacks of other insects, whose presence is easily discovered 

 from the dust under the specimens ; when this is seen, they 

 should be taken out, brushed with a camel's-hair pencil, 

 then touched with spirits of wine, and placed near the fire 

 till dry. Moths frequently change colour from an oily matter 

 common to all insects ; when this is the case, powder some 

 dry chalk on a heated iron, cover it with a fine piece of 

 linen, and apply to it the under part of the insect; the 

 heated iron dissolves the greasy substances, which the chalk 

 then absorbs. Insects, when stiff before being properly 



