পাতা:পদার্থবিদ্যাসার.djvu/১৩৪

124 Pup. In what manner is the silk prepared when thus attained Tut. It is put into small coppers or basins of water, each over a small fire. The ends of the thread are found by brushing them over gently with a whisk made for the purpose; and in the winding they are eitch passeti through a hole, in an horizontal bar of iron placed at the edge of the basin, which prevents them from being entangled: some wind it on wood. The whole threasí is generally found to be about 34.0 yards long ; and so fine, that eight or ten threads are drawn off into one. From these threads silks of every descriptiou are na: nufie urekł. Prrp. Hovv , -sefui are these insects, which we are apt to despise Tut. More usesús in their stumble sphere than soune of the human species themselves. All useless members of society may leari, a lessor, even from the tribe of insects. Pop. I have heard of the lac insect too, and wish to know it : pray what is it? 7%t. ii is a smail insect known in different paris of the world. and used for various purposes. In India these insters are found on outly four kinds of trees, the principat -f w leich are, the Ficus religiosa and Ficus indica. They are seen it, great abundance on the trees of the uncultivated mountains on both sides of the Ganges; and here the only ti ouble 1 he people have with them is that of breaking down the branches, and carrying them to unarket, Some brought from South America have also been cultivated with advantage in plantations. pup. Ilow are these insects formed into lae ? Tut. They are separated from the plant by a knife blunted at the edge, and put into vessels formed for the purpose, after which they are put to death and