H. J. Alfred Otter, The modern Angler : a practical handbook on all kinds of nagling, Londres, L. Upcott Gill, 1898, p. 64-65.

The Caddis or Caddice Worm, otherwise the Cad-bait, Cadew, Cade Worm or Caddy, is the larval stage of the Caddis Fly (Phryganea grandis). The larvae rae produced in the water from eggs which the parent insect has carefully immersed at some depth ; on their first appearance they have only the head and fore part protected by a horny casing, the rest of the body being soft and white, hence the necessity for the curious tubular house which the Caddis Worm proceeds to build- out of any small substances within reach- stones, pieces of grass, and shells being usually employed…/… The name of this curious insect are- according to the Bicentenaru Edition of Walton’s «  Compleat Angler »- derived from old English terms- cade, a barrel ; caddy, a case, chest, or box. Experiments have been made by taking the caddis carefully out of its dwelling, and placing it in a suitable receptacle in water, when it has immediately commenced the formation of a new house from materials which have been supplied to it, such as tiny fragments of glass, coral, pearls, etc., which it has combined with very beautiful results.