40 [ilinois State Laboratory of Natural History. 



Payson E.G. Eidraann 710 



Plainviow " GCO 



Richfidd " 725 



ALEXANDER COUNTY. 



Bench-marks. 

 P. B. M. 64. 



Bolt in stone post, 1260 M. back from 

 river, 1 M. north from fence, on north 

 side of road leading east from Goose 

 Island P. 0., and about 19 mi. above 



Cairo 331.51 



P. B. M. 65. 



Stone post in woods 1500 M. from river, 

 and eight and one half miles above Cairo 

 P. 0., 26 M. from levee, and two and 



one fourth miles below Speis's Mills 318.25 



P. B. M. 66. 



Stone post 61 M. east of a point on 

 I. C. R. R. that is 391 M. north of the 



three-mile post north from Cairo 311.28 



TJ. S. P. B. M. 1. 



Bolt in N. W. side of Custom House, 

 Cairo 317.8 



Lowest Gauge Mark, Ohio River 268.58 



Cairo I. C. R. R 321 



Beech Ridge M. & 0. R. R 328 



Elco " 379 



E. Cape Girardeau G. T. & C. R. R 342 



Hodge's Park M. & 0. R. R 337 



Idlewild " 341 



McClure G. T. <.% C. R. R 337 



Sandusky M. & O. R. R 343 



Commercial Point C. B. Klingelhoefer 320 



Goose Island 



Olive Branch 



Willard 



Wheatland 



Thebes 



Santa Fe 



Sec.l7, T. 14S., R. 2 W. 



325 

 325 

 326 

 330 

 337 

 345 

 631 



