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Show ALMOST AS MUCH A3 GOLD. Photography Has Twice Dcubled the Price of Platinum. Tho Idea thnt tho spread of photography photog-raphy could do soverp Injury to tho trade In commercial fertilizers, nnd especially es-pecially to tho conversion of raw phos-phato phos-phato into plant food, scorns nt first sight absurd. Yet so it is, and in this way. Phosphates Phos-phates and bones, to bo made avail nblo as soil Improvers, must bo treated treat-ed with sulphuric ncld. Now sulphuric acid will dlssolvo most metals au easily eas-ily as water doos sugar. Platinum It nlmost tho only metal upon which It has no effect. So, In splto of their great cost, manufacturers man-ufacturers havo generally employed retorts mado of n piatiuum alloy for tho concentration of sulphuric acid. Thcso retorts used to bo mado tn Paris and cost $S,600 to $12,000 apiece. To-day such a thing ns n plntlnnm retort would cost litcrnlly n fortuno, for platinum, owing to tho Introduction Introduc-tion of tho platlnotypo process in photography, pho-tography, has Ron 3 up from about $5 nn ounce to tho present price of $20 an r.unco It is, Indeed, nearly ns cost' ly as gold. Stray Stories. |