646 GEOLOGY OF OHIO. 



forest growth seems to be met in these cases, but in Franklin county the 

 wood found buried i^ pre-glacial. It is generally found to be red cedar, 

 when the structure is well enough preserved to allow identification. Not 

 less than a score of cases have been collected in which wood has been 

 found in the digging of wells. The examples come from Jefferson, Truro, 

 Madison, Norwich, and Prairie townships. 



2. The stratified drift covers a very large area in the central and south- 

 eastern portions of the county. The finest farming districts of the county 

 are to be referred to this division. All the characteristic features of the 

 Drift of the Champlain period are shown here. 



The Kames or gravel knolls are well represented in Baker's Hill, three 

 miles south of Columbus, on the Groveport pike. It rises fifty feet above 

 the general level of the country around it, and consists of well washed 

 sand and gravel, that were placed where we find them by some eddy in 

 the great lake that occupied the Scioto Valley so extensively at this time. 

 When Baker's Hill was under water, there was very little of Hamilton 

 or Madison townships out of water, and the Scioto, if we shall call the 

 great sheet by that name, must have been not less than twelve miles in 

 breadth at this point. 



The soils and water supply of the county furnish very interesting 

 topics, the consideration of which must be omitted here for lack of space. 



