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acid active addition Advancement agricultural American amount animals annual appear application appointed assistant Association blood Board carried cells cent changes chemical chemistry collection College committee Company complete containing Council course determined direction director discussion disease Division effect electric engineering established experiments fact field give given Health held human important increase industrial Institute interest John Jour known laboratory material means Medical Medicine meeting ment method Michigan Museum natural observations obtained Office organization original period physics plants possible practical prepared present president problems production professor received recently reported rubber School scientific scientists serve session Society soil solution species Table tests tion United University various vitamin York