Anonyme, Our animal friends: an illustrated monthly magazine, New York, American Society for the Prevention of the Cruelty to Animals, vol. 20, 1893, p. 118.
The « Spectator » of the Christian Union has lately been observing the life that may be found beneath the icy covering of most ponds.
They are the winter homes of many small creatures; among others, of that odd race of caddis-larvae whose curious dwelling are thus described: One builds him a house by simply extracting the solid wood of a twig from its bark. Another takes the bark itself, in sections soldered together by plumbing so firm that the house parts at any place but its joints. There seem to be a whole tribe that build from little twigs cemented at all sorts of angles, while yet another of the tribe caddis does the same with pebbles and mortar. Indeed there is one of the tribe who, apparently by secretions, puts up a dwelling of little transparent bricks through which, in the strong sunlight, the captured inmate may be seen. On gravelly bottoms we shall discover larva which copy exactly a rough pebble and the angler who dissects a trout caught early in the season will often find in its maw one of these indegestible morsels containing the larva still alive. Yet another caddis, bearing a dwelling strangely similar to the hop, has a curious power of swimming upward, so that often it may be found clinging to the nether surface of the black ice. But throught the whole race the law of adaptation to environment holds, the dwelling, whether of twig, pebble or green nucleus, aping the debris of the bottom and hiding the caddis from its fishy foes. There is still another strange little creature green in hue and sharp tailed equipped with wings on which it seems to fly throught the waters, while a whole legion of animalculaa is disclosed betimes in a ray of sunlight let fall through a hole chipped through the black ice.