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Show I.lBlitent of Known Solids. 'The lightest known solid is said to bfc the' pith of the sunflower, with a spe-1 spe-1 iiic gravity of 28-100ths, or about ' br.e-cig-Mh that cf cork. The sunflower sun-flower is extensively cultivated in . ertrr.l r.us.s;a, and various uses arc rerved by lis different parts, the recent discovery of the lightness cf the pith essentially increasing the commercial value of the plant. For life-having appliances at sea cork has a buoj"ancy of one to five, while with the sunflower pith one to 35 is attained. About 800 cubic inches of it would weigh as much as one cubic inch of iridium, the heaviest metal. I Th Lon !on Lancet prints a long: tTtkk" on the "therapeutical aspect of trillns. f--houti.ig, singing, lingUine-. i r.vir.s:, Kijrbh.rr'f.ud yawriig." All nrr said to h-ivc their hygienic uses. Tnlk-i Tnlk-i 13 1 !'.' hur.ced a healthful occupation, occupa-tion, food ior. heart disease, and to some extent a substitute for bodily exercise. |