HOPETON WORKS. Ze 
The lengths of the sides, diameters, and diagonals ascertained from a 
earefully drawn plat of large scale are as follows: 
Feet. | Feet. 
Biromplle tou: Qieeraeancce sce cee 908 | Krom ytomomee p= eee eee 1,008 
POY owl Oe Agere ee = sre oic's: clara ote Seon LeromysytOrl\ Oy a2 ees ote ete 1, 005 
Pronied to eer os ss oo. QHOs|*Erome4: totes. Meee es eee 1, 250 
IdRoyon IID ioy TUL aaa eoneonponeee S0e8r) Eromi2 tor? ae eee eee ae 
The inner angles are as follows: 
That at station 1 contains ......- 163 2 | That at station 5 contains ...-... 163 32 
That at station 2 contains ....... 103 53 | That at station 12 contains .--.--- 103 40 
That at station 3 contains .....-- 166 27 | That at station 10 contains ....-.. 168 3 
That at station 4 contains .....-. 105 28. That at station 11 contains 105 06 
| That at station 11 contains ...--. 
It is apparent from these figures and from the plat (PJ. VIL.) that this 
inclosure is comparatively regular, the opposite angles with one excep- 
tion differing less than half a degree and the exceptional one differing 
from its opposite but 2°. 
Nevertheless the regularity is not such as would be expected from 
the use of instruments. 
The diameter as given by Messrs. Squier and Davis is 950 feet, and 
the area according to their calculation is 18 acres. According to the 
resurvey the diameter in one direction (measuring to the intersections 
of the middle lines of the walls) is 1,008 feet and in the other 1,005.” 
That Messrs. Squier and Davis are to be understood as counting to the 
middle of the walls is to be inferred from the fact that the diameter of 
the circle was evidently measured in this way. Assuming they were 
correct in reference to the circle it follows, of necessity, that their meas- 
urements of the octagon are erroneous, the diameter given being 50 feet 
too short, and the area 2.6 acres too small, 20.6 acres being the true 
area. 
HOPETON WORKS. (ANC. MON., PL. XVII.) 
The only parts of this group we notice here are the large circle and 
the connected square. 
These works are situated on the general level of the Scioto Valley, 
designated by Squier and Davis “the second terrace,” which here stands 
about 30 feet above the river level. The walls of the circle and square 
are yet very distinct, and with the exception of a single break in the 
circle can be readily traced. In fact, the lowest point of the square is 
yet 5 feet high. The circle is more worn, the western half averaging 
about 2 feet high, while the eastern half is lower, fading out for a 
short distance near the northeast corner of the square. They are situ- 
ated close to the foot of the bluff which forms the slope to the upper 
level, here between 30 and 40 feet above that on which the work stands. 
As will be seen by reference to the plate in Ancient Monuments, 
instead of a passage-way between the circle and square, the two are 
here in direct contact, part of the circular wall forming a large portion 
of the north line of the square. 
