01124cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035001900092040005000111042001200161043003000173050002100203100003500224245006300259260005000322300006900372490006300441490004500504505022700549650005000776650001300826650001900839s  13000040 DLC20260227111910.0780321s1857    dcuabf       f001 0 eng c  as  13000040   a(OCoLC)3735158  aSmithsonian inst. LibrarycNGenoUdOCoLCdDLC  apremarc  an-us-ctan-us-maan-us-vt00aQ11b.S68 vol. 91 aHitchcock, Edward,d1793-1864.10aIllustrations of surface geology.cBy Edward Hitchcock ...  a[Washington,bSmithsonian Institution,c1857]  av, [2], 155 p.billus., XII pl. (part fold., incl. maps)c33 cm.0 aSmithsonian contributions to knowledge.v[vol. IX, art. 3]0 aSmithsonian Institution publicationv90.0 apt. I. On surface geology, especially that of the Connecticut Valley in New England.--pt. II. On the erosions of the earth's surface, especially by rivers.--pt. III. Traces of ancient glaciers in Massachusetts and Vermont. 0aPhysical geographyzConnecticut River Valley. 0aErosion. 0aGlacial epoch.