After washing and tratment

I. H. Jennings, How to photograph microscopic objects or lessons in photo-micrography for Beginners, Londres, Piper and Carter, 1885, p. 77.

6. Trichoptera-The larva of the caddis-fly may easily be prepared. The internal parts must be removed, when, after washing and tratment, with turpentine it is reading for mounting. The mature caddis-fly may be set up whole.