OCTOBEK 7, 1898.] 



SCIENCE. 



463 



miles from his home in Hingham, Mass., 

 to attend lectures by Benjamin Silliman be- 

 fore the Boston Society of Natural History, 

 his distinguished services of more than 

 sixty years on the Geological Survey of New 

 York, and his recent illness and death, 

 August 7 th. 



The papers presented before the Geolog- 

 ical Society of America, with brief notes of 

 their scope, mostly as stated in the Society's 

 preliminary announcement, were as follows: 



1 . Some Features of the Drift on Staten Island, 

 N. Y. By Aethue Hollick, Columbia 

 University, New York Citj'. The terminal 

 moraine crosses Staten Island from Fort 

 Wadsworth at the Narrows to Tottenville, 

 opposite Perth Amboy, N. J. Its front rests 

 partly on the serpentine ridge and partly on 

 the plain region to the south. In the former 

 locality it consists of true morainal material 

 of the northern drift. In the latter it com- 

 prises a ridge or core of Cretaceous and 

 Tertiary clays, sands and gravels, shoved 

 forward and upward from their original 

 position on the island, and on top of these 

 disturbed beds are the morainal till and 

 gravel. At two localities there are well 

 defined indications of extra-morainic drift, 

 south of the terminal moraine. The direc- 

 tion of glacial movement is indicated by the 

 strise on rock outcrops to be about S. 17° E. 



The most abundantly represented boulders 

 are those derived from the Triassic of New 

 Jersey, although nearly all the outcrops 

 between Staten Island and the Adirondacks 

 have contributed. A list of about 120 

 Palaeozoic fossils obtained from the trans- 

 ported boulders was appended to this paper, 

 with another list of about 35 Cretaceous and 

 Tertiary species, mostly fossil plants, de- 

 rived from the disturbed Staten Island 

 strata. 



2. Loess Deposits of Montana. By Profes- 

 soE N. S. Shaleb, Cambridge, Mass. (Read 

 by title.) 



3. Glacial Waters in the Finger Lahe Region 



of New Yorh. By Professoe H. L. Faie- 

 OHiLD, Rochester, N. Y. This paper noted 

 the stages of glacial retreat and consequent 

 changes of drainage, by which the glacial 

 Lake Newberry, outflowing southward to the 

 Susquehanna, was succeeded by Lake War- 

 ren, about 100 feet lower; and this, when 

 the ice was further melted back, by Lake 

 Iroquois. For the most definite stage be- 

 tween Lakes Warren and Iroquois, repre- 

 sented by a large beach at Geneva, N. Y., 

 and by an old channel of eastward outflow 

 south of Syracuse, the name Lake Dana is 

 proposed. 



4. The Stratification of Glaciers. By Peo- 

 FESSOE Haery F. Reid, Baltimore, Md. 

 Lantern views of the glaciers of Switzerland 

 and Alaska were displayed, attention being 

 directed to the author's observations of the 

 persistency of the original stratification oc- 

 casioned by the snowfall of successive years 

 on the neve. This structure was distin- 

 guished from the transverse blue banding, 

 analogous to cleavage, which is occasioned 

 by pressure of the moving ice, being espe- 

 cially developed in constricted or very steep 

 parts of the glaciers. 



5. Evidences of Epeirogenia Movements Caus- 

 ing and Terminating the Ice Age. By Wae- 

 EEN Upham, St. Paul, Minn. The vertical 

 amount of the preglacial elevation of North 

 America, during late Tertiary and early 

 Quaternary time, is shown to have ranged 

 from 3,000 to 5,000 feet, according to the 

 soundings of fjords and submerged valleys 

 on our Atlantic, Pacific and Arctic coasts, 

 the deepest of these valleys, exceeding 

 5,200 feet, near Monterey, California, hav- 

 ing been described by Davidson a year ago. 

 Similarly it is also known that a general 

 uplift of western Europe and western Africa 

 took place near the same time, of varying 

 amount, from a minimum of probably about 

 1,500 feet in the British Isles to maxima of 

 about 4,000 feet in Scandinavia, nearly 

 9,000 feet in the country adjoining the 



