APPENDIX. 
The following tables give a description of the points used for 
bench marks, with the original and adjusted elevation. The numbers 
agree with those* printed in red on the surface structure maps of 
each quadrangle. The red crosses show the general location of the 
benches. The numbers and elevations printed in italic denote the 
bench marks on primary lines. Bench marks established on sec¬ 
ondary lines are given with two elevations, the original and adjusted, 
the adjusted being the elevation corrected for the error of closure 
between two points of a primary line, or between a primary line 
and a previously adjusted secondary line. 
Bench marks in Steubenville quadrangle. 
No. 
1 
2 
S 
5 
5 
6 
7 
8 
9 
10 
11 
12 
13 
U\ 
15 
16 
17 
18 
19 
20 
21 
60 
24 
25 
26 
27 
28 
29 
SO 
31 
32 
S3 I 
35 
35 
36 
37 
38 
Description. 
Original 
elevation. 
Aluminum tablet at southeast corner of court-house. 
Feet. 
Chiseled square on southeast corner of coping stone, stone arch over 
Fourth street. 
Chiseled square on rock above spring. 
Top of south rail opposite station, Mingo Junction. 
Chiseled square on south side of stone bridge No. 47. 
Chiseled square on northeast corner of coping, stone bridge No. 48. 
Cross cut on lower stone, south side, east end of tunnel. 
Top of south rail, opposite New Alexandria station. 
Bronze tablet in top stone of northwest abutment of bridge_ 
Top of north rail at road crossing. 
Railroad bench mark at north end of arch culvert, GOO feet east of Fern- 
wood station. 
Chiseled square on northeast abutment of iron bridge over Cross Creek 
Top of north rail at road crossing. 
Railroad bench mark on northeast abutment of bridge No. 51... 
Railroad bench mark on northeast corner of coping stone of bridge 
No. 52. 
Railroad bench mark on northeast coping stone of bridge No. 53 
Railroad bench mark on northeast coping stone of bridge No. 54 
Top of stone corner post at end of stone wall. 
Aluminum tablet in southeast corner of foundation of WintersviUe 
Church. 
Cross cut in stone on east side of road at junction. 
Cross cut in southeast corner of bridge. 
Aluminum tablet in stone abutment of bridge to waterworks 
Cross cut in stone step of schoolhouse. 
Cross cut in stone at southwest corner of crossroads, Pekin . 
Bronze tablet in southwest pier of bridge over Island Creek.. 
Cross cut in stone step of Island Creek Church. 
Aluminum tablet in southeast corner of stone foundation of Knoxville 
Church. 
Top of post on north side of road. 
1,284.18 
Cross cut in stone at southeast corner of crossroads. 
Cross cut in bottom tier of stone, northeast abutment of bridge over 
road. 
Chiseled triangle in stone in center of road. 
Bronze tablet in northeast corner of stone foundation of brick church 
Cross cut in stone at southeast corner of road intersection. 
South end of platform, 2 feet east of track, Lazearville ... 
Top bolt at southeast corner of iron bridge over Cross Creek 
Bolt at south end of supporting board to platform, Cross Creek station 
Top of north side of stone culvert No. 4. 
Top of post marked “ E 2”. 
176 
Adjusted 
elevation. 
Feet. 
715.58 
715. 4 3 
697. 4 0 
675.50 
671.70 
675.85 
709.63 
750. 70 
751. 29 
771.20 
777.15 
781.18 
786. 76 
801.28 
810.66 
828.58 
836.58 
1,023.89 
1,255. 78 
1,258.77 
1,135.51 
662. 70 
1.163.96 
1,150.29 
787.68 
1.282.96 
1,279.66 
1,172.58 
653.22 
1,185.73 
1,259.13 
1,195.29 
666. 05 
656.38 
673.23 
669.53 
671.31 
