Septebibek 18, 1896.] 



SCIENCE. 



383 



Profile of the heel of the Niagara in its Gorge. By G. K. 

 GlIiBEKT. 



TheMagara Fails Gorge. By Geoege W. Holley- 



Origin and Age of the Laurentian Lakes and of Niagara 

 Falls. By Waeeen Upham. 



Correlation of Warren Beaches ivith Moraines and Out- 

 lets in Southeastern 3Iichigan. By F. B. Taylok. 



Notes on the Glacial Succession in Eastern Ilichigan. By 

 F. B. Tayloe. 



The Operations of the Geological Survey of the State of 

 Netv York. By James Hall. 



The Eocene Stages of Georgia. By Gilbert D. Harris. 



The Origin and Age of the Gypsum Deposits of Kansas. 

 ByG. P. Grimsley. 



Geomorphic Notes on Norivay. By J. "W. Spencer. 



The Slopes of the Drowned Antillean Valleys. By J. "W. 

 Spencer. 



Notes on Kansan Drift in Pennsylvania. By E. H. 

 "Williams. 



Preliminary Notes on the Columbian Deposits of the Sus- 

 quehanna. By H. B. Bashore. 



Pre-Cambrian Base-leveling in the Northioestern States. 

 By C. W. Hall. 



The address of the Vice-President, Prof. 

 B. K. Emerson, has been published in full 

 in this Journal, and requires, therefore, 

 only brief reference here. It was a remark- 

 ably bright and interesting address, and 

 was listened to with delight by a large au- 

 dience. 



Two sessions of the Section were occa- 

 sions of especial interest, dependent in one 

 case upon the time, and in the other upon 

 the place, of the meeting. The former of 

 these sessions, occurring on Wednesday 

 afternoon, was devoted chiefly to exercises 

 in commemoration of the sixtieth anniver- 

 sary of Prof. James Hall's work on the 

 Geological Survey of the State of New 

 York. , It is, indeed, a fact well worthy of 

 commemoration, that the great geologist 

 who is now at the head of the N'ew York 

 Survey, has completed a period of sixty 

 years of continuous service, and still pos- 

 sesses a physical and mental vigor which 

 promises years of fruitful work in the fu- 

 ture. In some respects, the survey of the 

 State of New York has been of more im- 

 portance in the history of American geol- 



ogy than that of any other part of the 

 country. The remarkably complete exhibi- 

 tion of the Paleozoic stroita in that state, 

 the relatively early date of the commence- 

 ment of their study, and the sagacity with 

 which the true principles of stratigraph- 

 ical classification were conceived by Prof. 

 Hall and his associates, have made the 

 State of New York the standard of com- 

 parison in the study of Paleozoic formations 

 for the whole region of North America 

 east of the Cordillera. The work of Prof. 

 Hall holds, therefore, a relation to the 

 stratigraphical geology of North America 

 somewhat similar to that which the work 

 of William Smith in England holds to the 

 general stratigraphical geology of the 

 world. The New York Survey has a 

 special interest for the members of the 

 American Association, by reason of the 

 fact that the Association of American Geol- 

 ogists, first organized by the State Geolo- 

 gists of New York and a few other states, 

 was the germ which developed into the 

 American Association for the Advancement 

 of Science. The exercises were introduced 

 by Vice-President Emerson in a brief and ap- 

 propriate address. Prof. Joseph Le Conte, 

 President of the Geological Society of 

 America, spoke in behalf of that Society with 

 rare eloquence. Prof. Hall responded grate- 

 fully to the congratulations of his fellow 

 geologists. The papers by W J McGee 

 and John M. Clarke, in which was given 

 an appreciative history of Prof. Hall's 

 work, were worthy of their theme. A let- 

 ter of congratulation was read from Dr. 

 George M. Dawson, Director of the Geolo- 

 gical Survey of Canada ; and appropriate 

 remarks were made by a number of gentle- 

 men who, in various ways, had been asso- 

 ciated with Prof. Hall and his work. The 

 meeting, as a whole, was an appropriate 

 and worthy commemoration of an epoch- 

 making work. 



The other occasion of especial interest 



