136 Illinois State Laboratory of Natural Hidory. 



Pecatonica River. 



Mouth 715 



West line of Winneliago county 735 



North line of Stephenson county 764 



Rock River. 



Mouth 541 



West line of Whiteside countv 575 



At Lyndon .". 600 



At Dixon 650 



At Rocldord 700 



North line of Winnebago county 728 



Saline River. 



Mouth 304 



North of Leamington 350 



East of Newcastle 400 



East of Caneyville 450 



Sangamon River. 



Mouth .' 430 



Northwest corner of Menard county 445 



South line of Menard county 512 



Southeast corner of Sangamon county 550 



East line of Macon county (500 



East line of Piatt county 665 



Shoal Creek. 



Mouth 381 



North line of Clinton county 445 



East of Old Ripley 490 



Near Hillsboro 550 



North line of Montgomery county 650 



Spoon River. 



Mouth 429 



Duncan's Mills 450 



Near Babylon 500 



South of Maquon 5.~>0 



West line of Peoria county 600 



Two and a half niilrs south of Wyoming 650 



One mile west of Modena 700^ 



