There are many applications of fluor spar, some of which dissolving in water. This has the additional merit of securpieces ofphosphorus and place them, half covered with water, in the bottom of the jar in which the pictures are suspended. On a large scale, a Uuhmkorff coil and constant discharge of electricity would be preferable. It is somewhat surprising that this methou of cleaning fibers has not been more gener ally applied. we purpose to give in this article. ing a most valuable incidental

more »

... product in the potash. ALUM FROM FELDSPAR. ANTOZONITE.