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Show AMERICAN CHEMISTS SUCCESSFUL At the opening of tho war tho United Unit-ed States was left without many chemicals chem-icals which were produced in Germany and were not manufactured In this country. Our dyos woro made in Germany Ger-many and in certain linos of drugs tho Germans hold a monopoly of our markets. What the American chemists chem-ists havo done to fill the gap created by tho war Is set forth by Scientific American. "In 1914 there were but five companies com-panies undertaking to produce aniline dyestuffs, and now there are eighty engaged in this business," says the Scientific American. "In addition to this, many concerns that arc now producing pro-ducing explosives, will in time of peace, convert their works into dye plants. Seventy-five per cent of the dyos wo use are now being manufactured manufac-tured in this country, and they are being be-ing produced in quality fully equal to tho Gorman product At the outbreak of tho war wo suddenly found ourselves our-selves In an Indigo famine Our own stocks were soon used up, and then we began to use up the surplus stock in China, where largo quantities had been imported for use in all parts of that vast country. When It was found that a big price could be obtained for tho dye, the Chinese were only too glad to trade their indigo for American gold. But the Chinese stock is now practically practical-ly exhausted. In the meantime, how-lever, how-lever, American manufacturers havo uudertnkon the production of this dye; one concern is now turning it out at tho rate, of a ton a day, .and will be In jposition to continue to manufacture it after the war, in the face of German competition. But not only In the coal tar industries have wo made romark-Jablo romark-Jablo strides; we havo Invaded various other fields In which Germany predominated. predom-inated. It? was thought, at one time, hat optical glass and glass for use in chemical Industries could only be mado at Jena. Efforts to compote with the ! German product were unsuccessful ! prior to the war, mainly because of a natural suspicion of substitutes. Man- uiubiui u s ncii: nut. 1111115 lKJ 11 J uiu American product as long as they could get well-tried material that they were accustomed to using. Now, they havo been forced to try American glass, and havo found it to be fully the equal, and in many cases, superior to tho imported product For instance, the German chemical glass had to be ! made very thin so as to withstand tern-! perature changes. In this country we have developed a glass which can be made comparatively thick and yet withstand the same temperature changes. In fact, this thick glass has come to be used for cooking purposes, baking dishes, etc. Another development develop-ment of the war has been directed to the recovery of waste. One of the exhibitors ex-hibitors at the recent show demonstrated demon-strated a method of recovering a valuable valu-able product from the sulphite waste of paper mills. This disagreeable black stuff that has heretofore poured out of the mills discoloring the streams and kill all fish life, Is now put through a machine which extracts the water and recovers the solids in the form of a very fine, brownish powder, rich is resinous materials, and very sticky. This has a value now of $40 per ton and is used as a filler for leathers and in glue manufacture." 00 |