3l6 REVIEWS 



marked gravel ridge (or "hogback") extending for several miles in a 

 westward direction bearing to the north from the southeast corner of 

 Lamotte township. This was evidently formed at the time the ice 

 front rested on the Detroit moraine. Other interesting features not 

 observed by Mr. Taylor, though suggested by him, are the well-marked 

 kame deposits in the southern part of Sanilac county. In the vicinity 

 of Melvin and Peck they consist of hills and ridges of gravel and sand 

 thirty to fifty feet in height. 



The name Erie- Huron is offered for the whole series of lakes rep- 

 resented by all the beaches, while Lake Warren is restricted to one of 

 the separate lakes wliich most closely corresponds to the original 

 idea of Spencer who proposed the name. Taylor concludes that if 

 the relations of the moraine and beaches have been correctly inter- 

 preted then he has found outlets for three and possibly four stages, 

 and these so related to the topography of the region and to the 

 moraines that in at least three cases there is no reasonable doubt as to 

 the contemporary place of tlie ice front. Tlie continental ice-sheet 

 was obviously the great dam that held all these waters up. 



While testifying to the general excellence of the paper we find our- 

 selves unable to follow the author in the degree of confidence he 

 seems to repose in his barometer. As the correlation of some of the 

 beach lines depends upon the identification of beaches having a ver- 

 tical interval of twenty to forty feet only, and several miles apart and 

 was made by means of a common aneroid barometer, it must be said 

 that the conclusions in some cases are not without an element of 

 doubt. Thus, for example, the Belmore beach is identified near 

 Applegate at an elevation of 770 feet. Forrest Beach six or seven 

 miles east of this has an elevation of about 735 or 740 feet. Near 

 Cass City Mr. Taylor identifies the Du Plain beach which he says is 

 twenty to thirty feet above the Forrest beach. The Belmore and Du 

 Plain though so nearly related are regarded by Mr. Taylor as distinct, 

 while between them he postulates still another stage represented by the 

 Arkona beach which is said to have an elevation of 755 feet north- 

 east of Spring Hill. Allowing for northward rise this beach would have 

 about the elevation given the Belmore beach near Applegate. The 

 question then arises which beach does the Applegate beach represent, 

 the Belmore, Arkona or Du Plain, and what is the actual relation of 

 these to the Forrest beach ? Beaches twenty to forty feet above the 

 Forrest beach have been identified with each of these. Our own 



