56 



Cincinnati Society of Natural History. 



To enforce what has been said as to the reliabihty of the re 

 ported measures of Messrs. Squier and Davis, a number of statements 

 made by them in their work and bearing ui)on the matter, are 

 quoted in Appendix B. They are of importance as a part of this 

 paper, but are separated from the text that the actual measures of 

 the works may stand out in clear relief. Premising that this incpiiry 

 is contined to what are denominated "The Sacred Enclosures," 

 occupying the levels of the terraces as contra-distinguished from 

 the " Fortifications," or military works, we will now proceed to the 

 classification of the works, agreeably to certain prominent types of 

 of measures used. It will be seen that all the various types of 

 measure are inter-related, the one with the other. While this is of the 

 gist of this paper, it will also serve as a remarkable support to the 

 accuracy and faithfulness of the measures rejjorted. 



Group I. 

 This group comprises the use of two circles, a greater and a 

 lesser, in combination with an especial square. This square is 

 identically the same in quite a number of instances, the identity 

 being originally and first discovered, as asserted by Messrs Squier 

 and Davis, upon the compilation of work from the " Field Notes." 

 The measure of the side of this typical square is 1080 feet. As an 

 illustration, the plan of the works in Plate 20, page 56 of Scpiier 

 and Davis surveys is given (Figure 2.) This work is situated in 

 Ross County, Ohio, eight miles south-east of Chillicothe. 



No. I. The work just mentioned. As seen the side of the 

 scjuare is 1080 feet One circle has a diameter of 1720 feet, and 

 and the. other of 800 feet. An embankment connecting between 

 the square and the circle will be aioticed, 350 feet long. 350 feet 



