. Fresh-water aquaria: their construction, arrangement, and management, with full information as to the best water-plants and live stock to be kept, how and where to obtain them, and how to keep them in health. Aquariums. 242 TEESH-WATEE AQUAKIA. forcibly drag ttem out would only end in their being pulled in half—or, at any rate, in their death. But they may easily be dislodged by inserting the stalk of a leaf or a very thin piece of stick into the end at which is the extremity of the insect. This part of the tube is generally of smaller diameter than the other, and the animal will nearly alwa
. Fresh-water aquaria: their construction, arrangement, and management, with full information as to the best water-plants and live stock to be kept, how and where to obtain them, and how to keep them in health. Aquariums. 242 TEESH-WATEE AQUAKIA. forcibly drag ttem out would only end in their being pulled in half—or, at any rate, in their death. But they may easily be dislodged by inserting the stalk of a leaf or a very thin piece of stick into the end at which is the extremity of the insect. This part of the tube is generally of smaller diameter than the other, and the animal will nearly always, after a little tickling, evacuate its fortress. Sometimes the larvae wiU voluntarily leave their cases; but whether they have out of their homes, or have left of their own accord, they will generally return to them upon the first opportunity. It is a very interesting sight to see these clever little architects and builders at work. Upon being taken from their cases and placed naked, along with suitable material, in a. Fig. 151. Larv^ op Different Species of the Caddis-fly, and THEIR Cases. saucer or other vessel, they wiU readily make new tubes. They can be persuaded to construct their dwellings of pieces of coal, bits of glass, beads, filings of metal, and other things of a similar kind. Some caddis-worms work much more qxuckly than others, but the speed of construction frequently depends • upon the materials at hand. There are in Great Britain about one hundred and sixty different species of Caddis-flies, which have been divided by Mr. McLachlan, the author of the "Monographic Revision and Synopsis of the European Trichoptera," into seven families. Of these families, that of the PhrygoMeidse (Gr. phruganon, a bundle of sticks) contains the largest species; and that of the Limnophilidx the most numerous. It wHl, of course, be impossible to refer in this chapter to anything like all the. Please note that these images are extracted from scanned page
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaquariu, bookyear1890
