' 
156 COLLECTING NOTES. 
always be supplied with absolutely fresh food, and they must not be picked off the old leaves with 
the fingers, but coaxed on to the fresh plant slowly—or the part of the leaf they are on should be 
snipped off and placed on the fresh leaves. Larvae can be carried in small boxes with a leaf or two 
of the foodplant, but they should not be crowded together ; smooth, hairy and spiny larvae cannot be 
mixed together without damage resulting. Larvae of Hesperids in leaf-tubes should be taken with 
a stem to the leaf, to be placed in water as soon as may be: if the tube is detached you had better 
open it and put it on a fresh spray, as bamboo, reed and other leaves quickly shrivel, and if the 
larva is about to moult or pupate it will not crawl out, but will probably be injured by the 
contraction of the leaf. 
Some leaves keep fresh much longer in corked jars than they do in the open air with the 
stem in water. Foodplants brought from a distance should be gathered in the evening and carried 
home in tightly-fitting tin boxes. 
Butterflies may be relaxed by pinning them on cork or soft wood, and putting them in a 
box with a layer of damp sand in the bottom. A few drops of carbolic acid will tend to prevent 
mould, or a little flake napthaline mixed with the sand ; the latter also tends to relax the insects 
quicker. 
