WHY AND BECAUSE.
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Why arc certain metals malleable. ot reducible into thin plates or leaves by hammcriug aaa~-a "''a

 Because i,eir atoms cohere equally in whatever relative situation they happen to be, and therefore yield to force, and shift about among each other, almost like the atoms ofa fluid, without fracture or change of property. 5s@# .a.o ,1

 Gold is remarkably malleable, for it may be reduced to leaves of the thinness of 2S2,Oo0 to the inch. For gold-beaters the metal is first formed into rods, these are afterwards rolled or flattened into rib-. band, is cut into portions, which are ex- tended by hammering to great breadth and thinness, and which being again divided into portions, are hammered and extended to the tbinness described.--ArnOtt. <

 Why do bubbles rise on cup of tea when lump of sugar is dropped into it2

 Because the sugar is porous, and the air which filled its pores then escapes to the surface of the tea, and the liquid takes its place. .4 E.. r.,.....- :, a. sfaa a'Y .s

 Why does bottle of fresh water, cork ed and let down 30 or 40 feet into the sea, often come up again with the water saltish, although the cork be still in its place.

 Because tho cork, when far down, is SO squeezed as to allow the water to pass in or out by its sides, but on rising, it resumes l its former size. .. .. ....... -....5e. a.1