CONCtUStONS 347 



The nine scaurs on the left average 323 paces long, the seven on the 

 right 201. The stream is undoubtedly cutting most strongly on the left 

 side. The flood-plain, which is a true one, has been widened about in 

 this way : Deep scallops have been cut for the plain border in the upland 

 on the left (south), then the river cut some sort of scaur on the up-valley 

 side of the reentrant cusps between scallops. The only place at which 

 anything scaur-like occurs on the opposite bank, being invariably at the 

 tip of long meanders that have looped out across the plain from the scal- 

 lops and touched the northern bank without, however, notching it in any 

 case examined. The log roUways on the south bank are stated by reliable 

 lumbermen to be higher than those on the north all the way to Benton 

 harbor. Of the scallops mentioned as strongly developed on the south 

 side, two or three unusual examples are immediately west of the railway 

 station at Watervliet. No example wai seen on the north in the tract 

 studied. 



Conclusions 



The lower and middle Rouge, Eattle run, Huron, Saline, Raisin, and 

 Paw Paw show persistent and uniform tendencies toward one or the other 

 side of their valle3's wherever there is a flood-plain on which the streams 

 meander between distinct bluffs. The lower and middle Rouge, Rattle 

 run, and Huron, flowing toward points between southeast and east- 

 northeast, bear strongly to the right. The northern Rouge and parts of 

 the Saline and Raisin have channels incised between banks that their flood 

 waters fail to surmount. Here lateral erosion is irregular and lacks 

 definite tendencies. Other points on the Raisin bear hard to the right, 

 the Saline as hard to the left at points where perhaps their behavior is 

 due to restraint by Lake Warren beach ridges parallel to which they flow. 

 The Paw Paw, flowing to the southwest, bears strongly and uniformly to 

 the left. 



The left-handed rotation of the earth on its axis should make all mov- 

 ing bodies in the Lake coimtry seem to bear off to the right. If this ex- 

 plains the action of the eastern streams it leaves the Paw Paw beyond the 

 pale of law. If we have interpreted rightly the behavior of Saline and 

 Raisin at Dundee, the others have this in common, that they all bear 

 somewhat to the south. The tilting of the region toward south 27 de- 

 grees west, described by Gilbert, might account for such a tendency. 

 Taylor, Lane, and Goldthwait have recently pointed out that the old 



