632 PROCEEDINGS OF WASHINGTON MEETING. 



The next paper was — 



ON THE GEOLOGY OF QUEBEC AND ENVIRONS. 

 BY HENRY M. AMI. 



The paper gave rise to a discussion in which C. D. Walcott and H. S. 

 Williams took part, and a note was read from A. R. C. Selwyu. The com- 

 munication is printed, with plate 20, as pages 477-502 of this volume. 



The following communication was read by title: 



GEOLOGY OF THE ENVIRONS OF QUEBEC. 



BY JULES MARCOU. 



The Section then took a recess until 2 o'clock p. m. 



Tlie Second Section was called to order by Professor Edward Orton, who 

 was njade chairman, and Professor F. R. Carpenter was made Secretary.. 



The first paper in this Section was — 



THE NICKEL AND COPPER DEPOSITS OF SUDBURY DISTRICT, CANADA. 



BY ROBE LIT BELL. 



Remarks were made by W. H. Weed and E. V. DTnvilliers. This com- 

 nmnication was followed by an appendix on — 



THE SILICIFIED GLASS-BRECCIA OF VERMILION RIVER, SUDBURY DISTRICT. 



BY GEORGE H. WILLIAMS. 



The paper and appendix are printed on pages 115-140 of this volume. 

 The second paper was— 



PHOSPHATE DEPOSITS ON THE ISLAND OF NAVASSA. 

 BY E. V. D'INVILLIERS. 



Remarks were made by C. H. Hitchcock. The paper forms pages 75-84 

 of this volume. 



