104 ILUNOIS BIOLOGICAL MONOGRAPHS [202 



EXPLANATION OF PLATE 



Fig. 8. Bench mark 655, Salt Fork, above road bridge. Station 17. September 13, 1918. 

 Fig. 9. Salt Fork two and a half miles north of Sidney, looking north, the Champaign 

 moraine on the left, a flood plain on the right. Station 18. September 13, 1918. 



