Session of Wednesday, December 31. 



Two sections were organized. The First Seqtion was called to order at 

 9.35 o'clock a. m,, by acting President WincbelJ, with W. M. Davis as acting 

 Secretary. 



The Auditing Committee, Messrs. J. S. Diller and E. T. Diimble, reported 

 that the Treasurer's accounts had been examined and found correct. 



The report was adopted and the committee discharged. 



It was moved and voted that the Secretary should communicate to Dr. G. 

 Brown Goode, in charge of the National Museum, the thanks of the Society 

 for furnishing and operating the stereopticou used at this meeting. 



Professor Raphael Pumpelly was called to the chair, and the first paper 

 of the day was read by the acting President. 



A LAST WORD WITH THE HURONIAN. 



BY ALEXANDER WINCHELL. 



There was no discussion of the paper, which will be found printed in full 

 among the memoirs as pages 85-124 of this volume. 



The next paper was — 



COMPOSITION OF CERTAIN MESOZOIC IGNEOUS ROCKS OF VIRGINIA. 

 BY H. D. CAMPBELL'AND W. G. BROWN. 



It was discussed by W-. M. Davis, J. E. ^Yo\ff, F. L. Nason, B. K. Emer- 

 son, and G. H. Williams. It is printed, with the discussion, as pages 339- 

 348 of this volume. 



The following paper was then presented : 



THE STRUCTURE OF THE BLUE RIDGE NEAR HARPER's FERRY. 

 BY n. R. GEIGER AND ARTHUR KEITH. 



It was discussed by Bailey Willis, C. H. Hitchcock, G. K. Gilbert, C. D. 

 Walcott, and Jed. Hotchkiss ; and, with the discussion and plates 4 and 5, is 

 printed as pages 155-164 of this volume. 



LXLII— Bull. Geol. Soc. Am., Vot,. 2, 1890. {^^^) 



