Science Record

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Time (hr.} Fig. 4 Reactions of equivalent quantity ratio of dibasic acids and diethylene glycol at 150°C. @ succinic acid; © glutaric acid; @—-—dadipic acid; € —— pimelic acid; @ suberic acid; © azelaic acid: O sebacic acid.

N.B.:—The points for the third line from the top should have dots in the circles, being inadvertently obliterated during electro-plating—The Editorial Office.