TECTONIC GEOGRAPHY 557 



the period of jointing and block faulting in which the mosaic was produced was 

 subsequent to that of the folding. The fact that the folds have in the past absorbed 

 the interest of geologists here and elsewhere in the study of metamorphic rocks 

 is to be explained, it is believed, by their being everywhere prominent, so as to 

 force themselves upon the attention, whereas the fault structures have been 

 obscured through the agency of erosion, and are apt to be discovered only in areas 

 exceptionally favorable to their preservation or in which the key to their arrange- 

 ment has been found. 



The paper is illustrated by numerous plates and figures and forms part of a 

 paper prepared for publication by the United States Geological Survey. 



Session of Wednesday Evening, December 30 



At 6.30 o'clock p m the annual dinner was served at the Planters 

 hotel, with ladies and other guests present. 



At 8.30 o'clock the Society met in formal session in parlor A of the 

 Planters hotel, and the President of the Society, Samuel F. Emmons, 

 delivered the presidential address entitled 



THEORIES OF ORE DEPOSITION HISTORICALLY CONSIDERED 



The address is printed as pages 1-28 of this volume. 

 Following the presidential address a social reunion was held in the 

 same room. 



Session of Thursday, December 31 



The Society met at 9.45 a m, President Emmons in the chair. 

 The Council report was taken from the table and adopted without 

 debate. 



AUDITING COMMITTEE'S REPORT 



The Auditing Committee reported that all the accounts of the Treas- 

 urer had been found correct, and the report was adopted. 



The report of the Committee on Photographs was read by the Secretary 

 as follows : 



FOURTEENTH ANNUAL REPORT OF THE COMMITTEE ON PHOTOGRAPHS 



There is but little to report for the past year relating to the Society's 

 collection of photographs. There have been no views added, but through 

 the kindness of the Director of the U. S. Geological Survey many old 

 prints have been replaced by new ones of finer quality and mounted on 

 muslin ; thus the bulk of the collection has been considerably dimin- 



LXXII— Bull. Geol. Soc. Am., Vol. 15, 1903 



