Produced by The Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) BY FRANCIS P. VENABLE, PH.D., D.SC., LL.D. PROFESSOR OF CHEMISTRY, UNIVERSITY OF NORTH CAROLINA AUTHOR OF "A SHORT HISTORY OF CHEMISTRY," "PERIODIC LAW," ETC.…
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