lOi Illinois State Laboratory of Katural History. 



OGLE COUNTY. 



Bench-marks. 



U. S. P. B. M. 71. 



Forreston Junction. In lower step of 

 west wing of south abutment of viaduct 

 under I. C. R. R., fourth course of stone 



from bottom 876 05 



U. S. P. B. M. 72. 



Adehne. In S. E. corner of east face of 

 stone foundation of C, M. & St. P. R. R. 



elevator 749.69 



U. S. P. B. M. 73. 



Leaf River. In east end of south face of 

 stone foundation of D. Sprecker's elevator, 



70 M. east of depot 707.35 



U. S. P. B. M. 74. 



Byron. 560 M. south of track on Wal- 

 nut St., in northeast corner of north 

 wall of J. F. Spaulding's hardware store, 

 11 in. from corner, 4 ft. above ground... 728.06 

 U. S. P. B. M. 75. 



Vi mi. east of Byron. In south side of 

 west abutment of R. R. bridge over Rock 



River 692 25 



U. S. P. B. M. 76. 



Stillraan Valley. 50 M. east of depot, 

 20 M. south of track, in west front of 

 foundation of White's elevator, 11 in. from 



N. W. corner 705.38 



U. S. P. B. M. 77. 



2600 M. west of Davis's Junction. In 

 coping stone of north end of west abut- 

 ment of small bridge of C, M. & St. P. 



R. R '. 807.42 



U. S. P. B. M. 78. 



Monroe. 24 M. west of depot in south 

 face of stone foundation of elevator, 1% ft. 

 north of S. E. corner, 3)^ ft. above ground. 841.74 



Adeline C, M. & St. P. R. R 748 



Bailevville I. C. R. R 890 



Byron C, M. & St. P. R. R 727 



Ciiana C. & 1. R. R 800 



Creston C. & N. W. R. R 914 



