TITLKS AND ABSTRACTS OF PAPERS 111 



coM^TiTL Tio.y or Tin: K.nnirs isteriou 



BY L. H. ADAMS ^ 



{Abstract) 



Recent measurements of the true eompi^ssibility of rocks, combined with 

 information gained from a study of the propagation of earthqualve waves 

 through the earth, lead to certain conclusions concerning the nature of the 

 earth's interior, especially in regard to the question of the continuity or dis- 

 continuity of the earth' at great depths. 



Presented without notes, with hmterii-slide illustrations. 



EARTH'S RADIUS OF MOLAR REPOSE 

 BY CHARLES R. KEYES 



{Abstract) 



In a rotating spheroid of moderate rigidity the geometrical radius and the 

 radius of no strain are not coincident. One is a straight line; the other a 

 section of a parabolic curve the focal coefficient of which varies with the rate 

 of revolution. In the case of the earth, the behavior of the zone of rock-flow 

 is that of a homogeneous body under hydrostatic pressure. In the zone of 

 rock fracture the characteristics are those of a heterogeneous mass. Cumu- 

 lative stress is relieved through flexure, rupture, and shear. It gives rise to 

 all those tectonic structures which are commonly accounted for upon the 

 hypothesis of a shrinking nucleus. Tangential compression and mountain 

 genesis thus appear to be directly initiated without reference to cooling globe 

 or hydrostatic compensation in the earth's interior. 



Presented by title in the absence of the author. 



OSCILLATIOXS OF LEVEL I\ THE HEI/TS PERIPHERAL TO THE PLEISTOCENE 



ICE-CAPS 



BY REGIXALD A. DALY 



(Abstract) 



The rectjrd of wave erosion in Maine during the late Wisconsin submergence 

 is relatively weak. One of the suggested reasons is the low power of the 

 waves then beating on the shores. The small size of the waves is in turn 

 explained by assuming uplift of the continental shelf during Wisconsin time, 

 the land thus formed preventing access of waves from the open Atlantic. 

 Subsidence of the shelf during the later isostatic rise of the glaciated region 

 ex[M)sed the Maine coast once mor(» to the full force of the Atlantic. 



This hyp<jthesis is supported by Fernald's botanical discoveries in eastern 

 North America and by the results of Barrell's studies on isostasy. It needs, 

 however, to be tested by the facts observed elsewhere in the belt marginal to 

 the ice-cap of the Wisconsin stage, in the corresponding belts around the pre- 



Introduced by H. K. Merwln. 



