Curiosities

Francis T. Buckland, Curiosities of Natural History, Londres, Richard Bentley, 1871, p. 233.

Upon the mud in shallow pools curious marks can often be observed, as if a person had been drawing patterns on it with a small stick. These are the tracks of the common caddis-worm, that curious worm which forms for its unprocted body a covering of sticks, small stones, and even shells, which house it carries about on his back; it is these houses that make the groove marks in the mud.