Identification of the British Inch as the Unit of Measure. 143 



and 1,050, so as to show tlie numerical relation of diameter to cir- 

 cumference of a circle. We will show this, but will first set forth 

 one work, which directly and significantly shows the knowledge of 

 the circle of 360, connected with the measure of 240 and 90 feet, 

 or 1,080 inches. This work is i)art of the Seal Township (iroup, 

 in Pike County, Ohio, near the Scioto river, Plate 24, p. 66. In 

 this group are some of the most perfect figures of the circle in- 

 closing a s([uare, the diameter of the circle being 300 feet, and the 

 side of the interior S([uare 125 feet, and of the ellipse. As to the 

 circle and square the Authors say: "Nothing can surpass its 

 symmetry," and further: "It will be remarked that we have 

 here, the square, the circle and the ellipse, separate and in 

 combination, — all of them constructed with geometric accuracy." 

 As to the work to be shown, " Figure VI," they say : " its outlines 

 beautifully distinct ; " and they conclude : '' It is impossible to resist 

 the conviction that some significance attaches to these singular 

 forms." 



^°-^"\ Fig. 6. 



Here, in Figure VI, we have the circle of 240 feet in diameter. 

 240X ^1*^1050. The width of the passage way through the cir- 

 cle is 90 feet, or 1080 inches, 1080 divided by 3 is 360, and the 

 length of the passage way is 360 feet. This is 4320 inches. The 

 length of each arm of the passage-way is 60 feet, or 360 inches, 

 multiplied by 2, 360 less 120 is 240 feet, the diameter of the circle, 

 or 2880 inches, the circumference, in feet, of the famous Newark 

 circle, which will be given in its place. 4320 less 2880 is 1440, 

 144 being the square of 12. 432X.75=324, twice which is 648. 

 These two numbers viz. : 432 and 324, were especially used with 



