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A. A. A. S. VOL animals Ann Arbor argillite bluff body Boston bulb cells character Charles chert chipped clay coal College Committee Cornell University Council Delaware Delaware valley deposits Detroit endosperm evidence experiments F. W. PUTNAM fact feet foliage leaf forces gametophyte gens Geological geologists glacial gravel growth human implements important inches increase insects investigations Ithaca knowledge laws Layer MARCUS BENJAMIN Mass MCGEE measure meeting ment method motion Museum natural nucellus objects observed Ohio organic origin paleolithic paper pebbles Permanent Secretary Ph.D Philadelphia pistillate plants present pressure production Prof Professor race recent region relation river scientific Section seed Society soil species specimens sporophylls stomata stones stratum structure surface temperature terrace THEODORE GILL thick tion totem trench Trenton University Vice President Washington York