TITLES AND ABSTRACTS OF PAPERS 1^5 



PERSISTENCE OF VENTS AT STROMBOLI AND ITS BEARING ON VOLCANIC 



MECHANISM 



BY H. S. WASHINGTON 



{Abstract) 



When visited in August, 3914, the crater terrace of Stromboli presented five 

 active vents. Search through the literature has shown that the sites of these 

 foci of activity, with one or two others, have persisted in location for at least 

 about 150 years. This is shown by a series of plans and sketches which go 

 back to 1768 and which are reproduced in the paper. A similar persistence in 

 localization of activity is noted at Kilauea (about 100 years) and at other 

 volcanoes. The vents at Stromboli, as well as some at Etna and Kilauea, are 

 situated near the edge of a high scarp, through the face of which the volcanic 

 activity would presumably have found its way had it been of an explosive 

 character. It appears that the best explanation for the persistence and other 

 characters of the Stromboli, Etna, Kilauea, and other such vents is to ascribe 

 their origin to some such process as that suggested by Daly in his gas-fluxing 

 hypothesis. 



Presented by title in the absence of the author. 

 Printed as pages 249-278 of this volume. 



PLEISTOCENE DEFORMATION NEAR RUTLAND, VERMONT 

 BY ARTHUR KEITH 



(Abstract) 



Several years ago an extinct glacial lake, Lake Rutland, was discovered by 

 the author in western-central Vermont. Its shores rim the valley around 

 Rutland and have two strongly marked sets of terraces, deltas, and cut benches, 

 ranging in general between 900 and 1,100 feet above sea. The upper set ends 

 where a terminal moraine locates the position of the ice-front in Rutland 

 Valley, but the lower and later set extends beyond the area thus far studied. 

 These shores are tilted to the southwest, and the upper shore is steeper than 

 the lower. The tilting varies much, but a\^erages at least 12 feet per mile for 

 one stretch of 15 miles north and south. This deformation is far greater than 

 that assigned to the later glacial lakes Albany and Champlain. Its close rela- 

 tion to the retreat of the ice-margin shows that the land rose quickly in re- 

 sponse to the removal of the ice-load. Other relations are shown between 

 deformation and the local rock structures, which bear strongly on the appli- 

 cation of isostasy to continental movements. 



Presented in abstract extemporaneously. 



Brief remarks were made by Messrs. Taylor, Barrell, Coleman, and 

 Reid. 



