. . 88i . Circular N0. 15. A ’ · A
*l but on gluey substances in the diiferent papers and in the
binding of books. The outer surfaces of photographic prints
_ were scored exactly as were the surfac_es of wall paper and the
backs of books. Attempts made to poison them with starch
paste and other similar substances, suggested by what I had 1
seen in print about their food habits, failed, and it was only ‘
e
Fio. 13. Silver fish (Lepiisma saccharma). Adult. Original.
when glue containing poison was used that the insects were de-
stroyed. lt became evident from these observations that at
least one of the silver [ish species found in dwellings fed on
animal food, and this was made more certain by finding in-
dividuals feeding on the bodies of their dead rcomrades. It
must be admitted that there is a general impression, produced
by many repetitions of old statements, that the insects feed,
upon starehed fabrics. aud it is certainly true that such fabrics
have been at times damaged in households by some insect pest
As long as we do not know positively What insect does the min
chief. the silver fish will probably be blamed.