232 



There is still another ease of the same thiii.u' in seetion o. Blooiuiii.irton 

 Townshii). which tonehes the almost eovered spnr last mentioned on 

 the east and extends to I.'olan. east side of seetion :{. The little village of 

 Dolau lies in the jxap. or safi'. between the knoli and the spur of upland 

 separating Bean from Muddy Fork. Had the valley floors of these re- 

 spective streams been agjiraded some twenty-tive feet above their jiresent 

 level, the atta(died spur would have passed into the "island" tyjie. as. the 

 floors of the two valleys would in tliat case hav(> been conrti;ent. 



Additional illusTratioiiM might be appended. l)Ut the alM)ve series is 

 sufficient to bring out The variations in topographic relief which funiish 

 a key to this i)articular stage in the history of the valley. 



In a word, then, we may say these various phases of topographic relief 

 are not confined to a linnted part of the valley within Monroe County, 

 but are prominent features throughout its entire course. Moreover, they 

 exist as inevitable conse(iuences resulting from processes of aggrading 

 and hence may be used as legitimate and trustworthy criteria liy which 

 to deterniim^ a part of the life liistory of the resi;ective valley. 



(U.ACIAL HISTORY OF PEAN BLOSSOM. 



That Bean Bdoss(un and the adjoining uplands near its mouth have been 

 occupied by an ice sheet is attested to by a series of observations. The 

 occurrence of glacial boidders. gravel and tine sand near the motith (sec- 

 tion 9. Bean Blossom Township) and patches of sand with occasi(mal 

 boulders as far up stream as section L!4. near Lost Ridge, warrant this 

 conclusion. Froiii section 24 Mr. ('. E. Siclientlial has traced the edge of 

 the till plain to the northeast, it being fotnul to follow along the line of 

 Indian Creek, and jiassing out of iMonroe at (iodsey into Morgan County, 

 but returning again t(; ^lonroe some two miles east, where Hacker's 

 Creek crosses the ucjrth line. From this point to the southeast the edge 

 of the till is exceedingly difficult to trace. Pat(dies of saml and gravel, 

 however, occur in the head waters of some of the northern tributaries to 

 Bean Blossom, in rmi-theastern Monroe and Brown counties. Furthermore, 

 glacial gravel and pcbl)les ar(^ known to occur within th(> limits of Bean 

 Blossom itself, not tar Yvoin the east line of Monroe: but whether this was 

 ice or water-laid has not lieen determined. Enough facts, however, are 

 at hand to show that the heads of northern tribtitaries of Bean must have 



