Sister took one

Bernice C. Reynolds, « A Boy and a Brook », The Nature-Study Review, Ithaca, New York, The Comstock Company, janvier 1920, p. 15.

There were queer marks all over the silt so is asked me to look out for the cause. Soon I saw some snails ploking along the bottom. Them I noticed some little sticks really crawling and marking up the bottom. Sister took one out and showed me how a little worm was tucked away Inside. They are called « Caddis-worms ». They build themselves little tubes of sticks and moss to live in until they are grown up and ready to come from the water. Their houses are fastened to them, and they carry them wherever they go.