FortHill，Ohio。
Certainfacts，amongstwhichIwould，inthefirstplace，quotethediscoveriesofDr。AbbottinthealluvialdepositsoftheDelawareandthoserecentlyannouncedinNevada，[45]provethecontemporaneityofmenlikeourselveswiththegreatedentateandpachydermatousmammals，whichwerethemostcharacteristiccreaturesoftheAmericanfauna。TheprehistoricinhabitantsofNorthAmericawerefamiliarwiththemastodon，thoseofSouthAmericawiththeglyptodon，theshellofwhichonoccasionservedasarooftothedwellingofprimevalreran，whichdwellingwasoftenbutadenhollowedoutoftheground。AsinEurope，theearlyinhabitantsofAmericahadtocontendwithpowerfulmammalsandfiercecarnivora；andintheWestasintheEastmanmadeupinintelligenceforhislackofbruteforce，andhoweverformidableananimalmightbe，itwascondemnedtosubmitto，ordisappearbefore，itsmaster。IncourseoftimeSedentaryreplacedNomadraces；
shellheaps，someofmarine，someofriverineandlacustrinespecies，butallalikemixedwithagreatvarietyofrubbish，weregraduallypiledupextendingformanymilesandcoveringmanyacresofground，bearingwitnesstotheexistenceofapopulationalreadyconsiderable。
Groupofsepulchralmounds。
InotherpartsofAmericaprehistoricraceshaveleftbehindthemhugeearthworks，loftymasseswhichwereprobablyfortificationsFig。5，temples，andsepulchralmonumentsFig。6。TheseearthworksextendthroughoutNorthAmericafromtheAlleghanyMountainstotheAtlantic，fromthegreatlakesofCanadatotheGulfofMexico。Thenameofthepeoplewhoerectedthemislost，andwemustbecontentwiththatofMoundBuilders，whichcommemoratetheirvastundertakings。