626 



SCIENCE 



[N. S. Vol. XXIX. No. 746 



2:10 P.M. The first paper presented in the main 

 section, under the chairmanship of President 

 Calvin, was: 

 On Faults: Haert Fjeujing Reid, Baltimore, Md. 



This was followed by 

 Mass Movements in Tectonic Earthquakes: Harry 



Fielding Reid, Baltimore, Md. 



These papers were discussed by Professor W. H. 

 Hobbs and H. F. Reid. 



The next paper was read by title: 

 'I'he Alaskan Earthquake of 1899: Lawrence 



Martin, Madison, Wis. (Introduced by C. K. 



Leith.) 



The society then listened to 

 A Recent Landslide in a Shale Bank near Cleve- 

 land accompanied by Buckling: Frank R. Van 



Horn, Cleveland, Ohio. 



The landslide in question took place at the 

 plant of the Cleveland Brick and Clay Company, 

 beginning Monday, August 17, 1908, at 3 p.m., 

 and lasting until late the following day. The shale 

 bank is about 112 feet high and consists of about 



3 feet of drift, 21 feet of Cleveland shale and 88 

 feet of Erie Chaghn shale of the uppermost De- 

 vonian. The bank cracked along the valley for a 

 length of 250 feet and followed weathered joint 

 planes almost entirely. The width of the crevice 

 varies up to 22 feet and the vertical displacement 

 is 6 to 7 feet. The mass broken oflf has been 

 estimated variously up to a million tons, but one 

 hundred thousand tons is probably excessive. 

 After the crevice reached its widest dimensions, 

 the severed block settled back towards the cliif 

 about 1 foot, producing a noticeable dip of the 

 shale layers, at the same time the valley floor at 

 the base of the cliff buckled up into an anticline 



4 to 5 feet in the highest portion and traceable 

 over a distance 200 feet. The buckling continued 

 over a period of two months after the crack 

 formed. Buckling is quite often noticed in shales 

 along the edges of stream valleys and it is pos- 

 sible that such movements have been caused by 

 similar landslides. 



This paper was discussed by Professors H. P. 



Gushing, J. W. Spencer, G. B. Richardson, F. R. 



Van Horn, G. K. Gilbert and G. H. Ashley. 

 Then was read by title: 



The Volcano Eilauea: C. H. Hitchcock, Hono- 

 lulu, Hawaiian Islands. 

 After this was presented: 



Mt. Pels of Martinique and the Soufriire of St. 

 Vincent in May and June, 190S : Edmund Otis 

 HovET, New York, N. Y. 



The paper gave the results of an expedition 

 made to the Lesser Antilles in April to July, 1908, 

 illustrating by means of lantern slides the pro- 

 gressive changes in 1902, 1903 and 1908 due to 

 the great eruptions and the efforts of nature and 

 man to recover from them. 



The last paper of the afternoon was: 



Multiple Glaciation in Neic York: H. L. Fair- 

 child, Rochester, N. Y. 



Evidence of pre-Wisconsin glaciation in terri- 

 tory surrounding New York State — in Canada, 

 Ohio, Pennsylvania, New Jersey and New England, 

 implies a similar history for the state. 



An accumulating body of fact points to at least 

 two ice invasions. Such features are: (1) the 

 widespread occurrence of more or less difference 

 between the surficial and the deeper till ; as shown 

 in color, texture, composition, with sometimes a 

 distinct surface of separation; (2) weathered gla- 

 ciated surfaces and heavy glacial flutings merely 

 scraped in places by a later abrasion; (3) old 

 planation surfaces which though protected by 

 Wisconsin till have lost their glaciated character; 

 (4) probable stream channels not the product of 

 the latest glacial drainage; (5) physiographic 

 features of anomalous relationship. 



No interglacial deposits have as yet been found. 



This paper was discussed by Professor G. K. 

 Gilbert, R. S. Tarr, F. Carney, A. Penck and A. P. 

 Brigham. 



Adjourned at 5:25 o'clock. 



The society met at 8 o'clock Tuesday evening in 

 the lecture room of the geological department to 

 listen to the presidential address of Professor 

 Samuel Calvin, who chose as his theme " The 

 Latest Phase of the Pleistocene Problem in Iowa." 

 This paper will be published in full in Science. 



At the close of the address, the society and its 

 friends adjourned to the rooms above the lecture 

 hall and participated in a " smoker " as the 

 guests of the geological department of the uni- 

 versity, the function closing shortly before mid- 

 night. 



Wednesday morning the society came to order 

 in general session. President Calvin presiding, at 

 9:35 o'clock, and after the consideration of some 

 matters of business listened to the reading of a 

 letter from Hon. Gifford Pinchot, chairman of the 

 National Conservation Commission, requesting the 

 appointment of a committee by the Geological So- 

 ciety of America with which the commission might 

 confer regarding geological subjects. It was voted 

 to empower the president to appoint three fellows 

 to act as a committee on conservation. 



