27 



©efd^ieBe 511 Betradf;tcn finb, fo finb e§ tu öteid^er 95?ci[c 

 in ^D'^orbamerifa bie ©ec^enbcn um bie öroßcu ©eceu unb 

 uamcntüd; bie ©ecjeub fübüc^ Dom Oberu^See. ©ie Q^e- 

 glcruug ber bereinigten (Staaten feubete uod; !iir3(i(fe unter 

 bcr Leitung ber ötaatöcjeotoaen Softer unb föl}itne^ eine 

 ß^-pebiticn ab gur Unterfud^nng cim^ Zf)z\k^ berÖänbcr 

 am Obern*@ee, unb eine jroeite unter Leitung beö 8taatö^ 

 geolovgen Oujen 3ur geologifc^en Unterfud^ung bon SSiö* 

 confiu, ^otoo, unb 2}tinnefota. 2)er 33eri(^t ber er[tereu 

 liegt uns bor in bem Sßerfe: Report on the geology 

 and topography of a portion of the Lake Superior 

 land-district in the State of Michigan, by J. W. Fester 

 and J. D. Whitney, Uniled States geologisls. In two 

 parls. Washington« Printed for the house of reps. 

 1850; ber 33eri(^t ber gttjeiten (5^-pebition in einem prac^t" 

 l>oü außgeflatteten SBerfe, tpeld^eö ben Sitet fü^rt: Re- 

 port of a geologicai survey of Wisconsin, Jovva and 

 Minnesota; and incidentally of a portion of Nebrasca 

 territory. Made nnder instruction from the Uniled 

 States treasury departement, by David Dale Owen, 

 United States geologist. Philadelphia. Lippicott, Grambo 

 & Co. 1852. 



©ie[e Unterfuc^ungen, bie mit (Sorgfalt, (Sad;!ennt* 

 ni§ unb @efd)id au^ geführt tüurben, fiub reic^ an ^toh^ 

 ac^lungen, n)el(^e bie norbamerifanifc^en £)itui?ial=^lMagC'» 

 ruugen betreffen. !l)af|elbe gitt anä) ton ben llntcrfuciun* 

 gen beß $errn "iprofefforö abwarb §itd)co(f, bereu Die* 

 fultate in ben: Illustrations of surface geology bcr 

 Smilhsonian Contributions to knowledge uiebergelegt finb. 

 ScJ berbante biefe^ neben einer großen ^n^ulji anbcrmeiti- 



