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Cincinnati Society of Natural History. 



location and dimensions were particularly fortunate, as it was 

 from it that the bulk of the find was procured. Almost three 

 weeks were consumed in making this one excavation. That 

 the work was very slow, and difficult as slow, can be judged 

 by the quantity of bones that were so promiscuously and 

 closely buried in this shaft. After a depth of five feet six 

 inches had been reached the task became very laborious and 

 tedious. From this depth to twelve feet seven inches, only 

 one helper could be advantageously employed, and the work 

 was virtually done by the use of trowels, while around the 

 more closely-wedged bones, nothing but the bare hands would 

 answer. All signs of remnants having ceased at a depth of 

 twelve feet seven inches, soundings were made by means of 

 tunnels, in all directions, on a horizontal line, and by smaller 

 shafts to an extreme depth of twenty-one feet six inches. 



The third and fourth shafts were sunk to a depth of four- 

 teen feet. The third only produced two fragments of teeth, 

 that were evidently from the premolars of a very young M. 

 americanus , while the fourth was entirely barren. 



The location of the find is in Section 27, of Columbia Town- 

 ship, just north of Observatory Avenue, and west of 

 Shaw Avenue, thus being but a few yards outside of 

 the limits of the City of Cincinnati,* and on the brow 

 of a small but abrupt knoil, which, at this point, runs 

 almost due east and west, 670.3 feet above the sea level. 

 To the North, at the base of the slope, are the remains of 

 a swamp. At present only a very small area is covered 

 by marshy ground, as compared with its original extent. 

 The swampy ground is ten feet lower than the surface level 

 of the shafts. The springs abounding in this mire are the 

 principal sources from which Crawfish Creek arises. This 

 creek, which is a direct tributary to the Ohio, flows first to 

 the southeast and then to the southwest by south, flowing 

 into the Ohio two miles south of the swamp. 



The territory, which is drained by the creek, although of 

 only moderate area, was formerly very rugged, and, as the 

 map will indicate, is even yet marked in its sudden changes 

 of elevation, in spite of its being in the heart of a great city. 



:: See map. At point indicated by an asterisk. 



