Which form interesting objects

Henry Noël Humphreys, Ocean and River gardens, vol. 2 River gardens).Londres, Sampson low. Sond & Co., 1857, p.105.

« There are also the Caddis-Worm of different kinds, which form interesting objects, clothed in their portable house of little sticks and stones (see plate V) which protects them from the attacks of fish or other insects. They are the larva stages of various species of Phryganea »