Hubert, Philip Gengembre, 1852-1925 · New York, C. Scribner's sons · leaf 190
r it would never vulcanize ; that a portion of CHARLES GOODYEAR 173 white lead in the compound greatly facilitatedthe operation and improved the result; and whenhe had learned these facts,-it still required costlyand laborious experiments to devise the bestmethods of compounding his ingredients in… … 1831, the proportions and the degree of heat. Hetells us that many times when, by exhaustingevery resource, he had prepared a quantity ofhis compound for heating, it was spoiled becausehe could not, with his inadequate apparatus,apply the heat soon enough. To New York, then, he directed his…
Inventors
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