84 A N C 1 1-: N T JI O X U M E N T 8 . 



another place, coiistitule.s by far the most interesting feature of the work. It is of 

 the form and relative size indicated in the plan, and is composed of loose broken 

 sandstone and earth, based upon dislocated and broken sand-rock. Jt is from one 

 to eight feet higli, being lowest at the oastern end or head, and at the projecting 

 points. It is probably of the same design with those of Wisconsin, already alluded 

 to, which occur in great numbers and in long and apparently dependent ranges. 

 None ol" those, iiowever, so far as kno>N n, are found enclosed after the manner of 

 the one here presented. {See '■'■ Remains of' the North-Weat") No explanation 

 of the probable design of this work w ill be attempted here : it is impossible, 

 however, to disconnect it Irom the superstitions of the ancient people. An 

 interesting fact is comnmnicated by F. Cleveland, Esq., of Portsmouth, who 

 assisted Mr. Whittlesey in making the survey of this work, and who was engineer 

 on the (^hio canal when it was in progress ; viz. that the workmen engaged in 

 excavating found large quantities of mica, in sheets, in the immediate vicinity of 

 this enclosure. This mineral is found in gi-eat abundance in the mounds, and in 

 the neighborhood of these ancient works. 



PLATE XXIX. No. :?. 



ANCIENT WORKS, FRANKLIN COUNTY, OHIO.* 



This work occurs on the banks of Olentangy creek, a tributary of the Scioto 

 river, about one mile west of the town of W^orthington, Franklin county, Ohio. 

 The plateau upon the edge of which it is situated is elevated about fifty feet 

 above the bottoms of the Olentangy, and consists of a clayey soil resting on the 

 black shale formation of Ohio. The w ork is rectangular in form ; its sides 

 correspond very nearly with the cardinal points, (varying but five degrees,) and 

 measure six hundred and thirty, and five hundred and fifty feet respectively. The 

 walls are unaccompanied by a ditch, and are very slight, though distinctly trace- 

 ablel^ In the line of the southern wall is a large truncated mound, C, twenty feet 

 in height, and measuring one hundred and ninety-two feet in diameter at the base, 

 and seventy-six feet in diameter at the summit. It is covered with large trees. The 

 wall that leads from this mound to the left, is placed a little further outwards than 

 that leading to the right. The mound D, in the centre of the enclosure, is small 

 and low. Near the south-western corner of the work is a small circle, with an 

 interior ditch and single entrance ; it is one hundred and twenty feet in diameter. 

 Some distance to the north-west of the enclosure, and on the opposite side of a 

 deep ravine, is another small circle, one hundred and forty feet in diameter, w ith 

 three entrances. 



Fiom llip Plan and \niec, of Chari.ks Whiiti.f.^f.y. Esq. 



