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Show Fish That Spin Silk. Silk stockings are very expensive nowadays, says Pearson's Weekly. The most costly of all this kind of hosiery, however, Is made from sillc which Is not the product of the silkworms, silk-worms, but a species of shellfish called a pnina. The pnina makes its home in the warm waters of the Mediterranean round Sicily. It has an odd little tube at the end of its tongue. Out of this tube, spider fashion, or silk-worm fashion, it spins a silk threat! with which it fastens Itself to any y . rock to which It wishes to adhere. When the puina moves on to fresh feeding grounds Its silken cable Is left behind. This cable, which is caller! byssus, the Sicilian fishermen gather. Byssus weaves Into the softest, fine;, sheenlest of fabrics ; but. It Is very rar-;, and the stockings woven from It consequently con-sequently are as has been said exceedingly ex-ceedingly expensive. |