REVIEWS 6li 



Scott, A. C. A Brief Simimary of Glacier Work. Am. Geol., Vol. XXX' 

 pp. 215-61, 1902. 



This summary was written as a seminary paper in a course in geology at the Uni- 

 versity of Wisconsin. When attempting to arrange an outline of the work it was 

 found that the literature nowhere included a summary, hence the publication of the 

 paper. Although not exhaustive, it attempts to cover the important topics of the 

 subject. 



True, H. L. The 'Cause of the Glacial Period. 162 pp. Cincinnati : The 

 Robert Clarke Co., 1902. 



The first 52 pages outline the main features of the drift, state the glacial theor)^ 

 and discuss the several current hypotheses which aim to account for the glacial period. 

 None of these, nor all of them put together, satisfy the author. Years ago he con- 

 ceived the idea that a change of latitude might account for glaciation. In the 

 remaining no pages the following topics are considered : (i) the inability of a change 

 of the earth's axis to produce a glacial period ; (2) the stability of the earth's axis ; 

 (3) time and climate; (4) causes of change of climate; (5) the glacial period still 

 continues ; (6) the glaciated region and probable thickness of ice during the maxi- 

 mum of glaciation ; (7) the Champlain epoch ; (8) evidence that the earth has toppled, 

 together with a consideration of the objections ; (9) an open polar sea. 



The chief idea set forth in the book is that of a change of latitude or disturbance 

 of the rotary motion of the earth produced by the weighting of the ice-covered region. 

 The buried channels of the glaciated region, which are commonly interpreted to indi- 

 cate a former high altitude of the land, are here interpreted to indicate that the land 

 stands nearer the equator than it did when they were cut. The northward rise of the 

 marine beaches and beaches of the great glacial lakes of the eastern part of North 

 America are interpreted to indicate that the region is swinging away from the equator 

 instead of undergoing an uplift. The reviewer would call attention to the fact that 

 these beaches do not show a continuous northward rise, but stand higher for example, 

 on the borders of Lake Champlain than they do considerably farther north on the 

 borders of the Gulf of St. Lawrence, and even higher than at the extreme north end 

 of the Labrador peninsula, as determined by A. P. Low (see papers reviewed above). 

 The geological evidence appears to bring little or no support to the hypothesis that 

 extensive changes of latitude have occurred. If there has been an oscillation of lati- 

 tude as a result of the weighting of the glaciated region and subsequent melting, 

 physicists and astronomers may be able to calculate its amount. The subject seems 

 an inviting one for investigation. 



ADDENDUM — -CONNECTICUT. 



Eggleston, J. W. Some Glacial Remains Near Woodstock, Contiecticut. 

 Am. Jour. Sci., 4th series, Vol. XIII, pp. 403-8, 1902. 



A probably expanded stage of Woodstock pond is noted, and neighboring glacial 

 features consisting of kames, eskers, kettleholes, and drumlins are described. These 

 features are largely restricted to the lowlands. The ridges, which in that vicinity 

 stand about 300 feet above the lowlands, carry a smooth-surfaced drift. 



