Rubber used to grow on trees (Hevea brasiliensis): now it flowers in the imagination of would-be inventors all over the U.S. They cook strange messes on the kitchen stove, squeeze out plant juices in home laboratories, and set out for Washington bearing black or tawny samples. Last week's arrival was Dr. Glenn L. Casto, dentist of Spencer, W. Va.
He told Rubber Coordinator Arthur B. Newhall, a former Goodrich official, that he had put together natural gas, wood pulp, coal, lamp black and other ingredients into a rubber-substance which had already given 10,000...
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