82 



SCIENCE. 



[N. S. Vol. XV. No. 368. 



Washington, D. C; Librarian, H. P. Gushing, 

 Cleveland, O. ; Councillors, C. W. Hayes, Wash- 

 ington, D. C, J. P. Iddings, Chicago, 111. 



The following were declared elected 

 fellows of the Society : 



Ermine Cowles Case, A.B., A.M. (Kansas State 

 University, 1893), M.S. {Cornell Univ., 1895), 

 Ph.D. (Univ. of Chicago, 1896), Instructor in 

 State Normal School, Milwaukee, Wis.; Arthur 

 Gray Leonard, A.B., A.M. (Oberlin), Ph.D. 

 ( Johns Hopkins Univ. ) , Des Moines, Iowa, As- 

 sistant State Geologist, Iowa Geological Survey; 

 Charles Hyde Warren, Ph.B. (Yale, 1896), Ph.D. 

 (Yale, 1899), Boston, Mass., Instructor in Geol- 

 ogy, Mass. Inst. Technology. 



The following memorials were read: 

 George M. Dawson, by Frank D. Adams; 

 Ralph D. Lacoe, prepared by David "WTiite, 

 read by the secretary ; Theodore G. "White, 

 prepared by J. F. Kemp, read by R. E. 

 Dodge. 



The following memorials were not read, 

 owing to the absence of the authors: 

 Edward W. Claypole, by Theo. B. Corn- 

 stock; Joseph Le Conte, by "VV J McGee. 



President Walcott, having meanwhile ar- 

 rived, took the chair, and the address of 

 welcome was delivered by Dr. Rush Rhees, 

 president of the University of Rochester. 

 He complimented the Society on its work, 

 and the city and University of Rochester 

 on the honor conferred by the meeting of 

 the Society within their confines. He saw 

 no special reason why Rochester should be 

 so favored, but hoped that this meeting 

 would stimulate its citizens to take a 

 deeper interest in higher education. 

 Finally he Avelcomed the Society most 

 cordially to the University and the city. 

 President Walcott, in responding, offered 

 many reasons why the Society should meet 

 in Rochester, for that city was intimately 

 connected with the early study of geology 

 in this country, and from it have proceeded 

 many eminent members of the Society. 



The following scientific papers were then 

 read: 



The Ordovician Succession in Eastern On- 

 tario: H. M. Ami, Ottawa, Canada. 

 This paper dealt with the succession of 

 paleozoic sediments in that portion of the 

 jirovince of Ontario, Canada, which is trav- 

 ersed by the Frontenac axis or ridge of 

 Archajan rocks which crosses the St. Law- 

 rence river between the city of Kingston 

 and Brockville and connects with the great 

 Adirondack massif to the south. 



The Frontenac axis divides the Ordo- 

 vician strata, to the east as well as to the 

 west, into two series, which, though not 

 very distant, geographically speaking, are 

 nevertheless marked by important features. 

 On the east side of -the axis the normal 

 succession of strata from the Potsdam to 

 the Medina is found, but on the west side 

 of the axis the pre-Cambrian rocks are over- 

 lain by the Rideau sandstone, succeeded 

 without stratigrapliic break by the Birds- 

 eye, Black River and Trenton strata. 

 Fossils, except Scolithus, are absent in the 

 Rideau sandstone and the problem of the 

 equivalency of this sandstone was stated. 

 In the discussion Mr. Bailey Willis con- 

 sidered that the Rideau sandstone is the 

 formational equivalent of the Potsdam, but 

 not its equivalent in age. Professor W. M. 

 Davis considered it pre-Black-river in 

 time, but of unsettled age. Mr. Walcott, 

 emphasizing the shifting character of the 

 deposits around the Adirondacks, sug- 

 gested that the Rideau was the shore 

 equivalent of the Calciferous (Beekman- 

 town) and Chazy. 



Stratigraphic and Faunal Succession in 

 the Hamilton Group of Thedford, On- 

 tario: Hervey W. Shimer and A. W. 

 Grabau, New York, N. Y. Read by Mr. 

 Shimer. 



The Thedford Hamilton admits of a 

 three-fold division, closely corresponding 

 to that of the Hamilton of western New 

 York. The limitations of the characteristic 



