342 



M. JEFFERSON LATERAL EROSION ON MICHIGAN RIVERS 



cent of the scaurs being on the right bank and 93 per cent on the slipping 

 bank. Mr Parkins' map, with sketched contours, shows how the stream 

 in crowding to the rigiit has captured Shin creek and then occupied a 

 portion of its old channel, for it appears evident that the two outlying 

 terrace islands in the center represent a former extension of the upland 



Fi«uuB 5. — Kattlv Run, near Port Huron. 



Showing the strong tendencv to the right that has led it to capture Shin creels and 



occupy a part of its valley. 



cusp from the south, which must then have had Battle run on its left and 

 Shin creek on its right. Battle run has invaded Shin Creek valley at 

 two points, the distance between them suggesting that it was the work of 

 two successive meanders of the run. It is of interest to compare with 

 this the Huron at the point of capture described by Bowman. The 

 Huron swung to the left in a- meander that captured Oak ravine, as 



