REPORT OF THE DIRECTOR I914 41 



Potsdam sandstone were occasionally noted at altitudes of from 

 2500 to 3000 feet. 



Certain interesting glacial deposits, extinct lakes, and drainage 

 changes will be fully described in the forthcoming bulletin on the 

 geology of the quadrangle. 



In addition to the work above indicated, there are complete or 

 progress reports on the surveys of other quadrangles : Utica, by 

 Burton W. Clark; Mount Marcy, Ausable and Lake Placid, by 

 Prof. J. F. Kemp, who has nearly concluded the work upon the first 

 of these and has the other two well forwarded ; and Tarrytown, by 

 Dr Charles P. Berkey. The general geological survey of Long 

 Island has been going forward for a number of years past, on the 

 basis of an agreement with Prof. W. O. Crosby representing the 

 New York City Board of Water Supply. Professor Crosby's final 

 report has been delayed by considerations which seem to have been 

 beyond his control, but it is hoped that this resurvey of an im- 

 portant district of the State may soon be presented for publication. 



INDUSTRIAL GEOLOGY 



The plan of including a series of economic minerals in the 

 Museum exhibits was mentioned in the report for the preceding 

 year. Within the past season numerous accessions have been re- 

 ceived, as set forth specifically in another place, and such progress 

 made that the successful accomplishment of the plan seems assured. 

 It is not the purpose to present a complete series of ores and 

 economic products but more particularly to display those which 

 typify the State's resources and their relations to industry. There 

 is now in hand a substantial collection that embraces typical ex- 

 amples from the more important mining and quarry localities, 

 besides metallurgical and chemical products of local industry and 

 much illustrative matter bearing upon technical methods of ex- 

 traction and treatment of minerals. 



Mines and quarries. The customary review of the mineral in- 

 dustries for the calendar year was prepared and published in the 

 form of a bulletin. The canvass of the various branches revealed 

 an unprecedented activity in production, although in general the 

 conditions could not be characterized as especially favorable owing 

 to rather low prices. The total value of the output, based on crude 

 or first products, was $41,598,399, the largest that has yet been 

 returned to this office and exceeding the aggregate for the preceding 

 year by about 14 per cent. Clay materials, inclusive of brick, 

 terra cotta, pottery etc., represented a value of $12,077,872, which 



