REPORT OF THE DIRECTOR I918 21 



IV 



DEPARTMENT PUBLICATIONS 



During the year the bulletins of the Museum have been issued 

 as rapidly as circumstances permitted. They have the following 

 numbers and titles : 



200 Key to American Insect Galls. By E. P. Felt 



201 Genesis of the Zinc Ores of the Edwards District, St Lawrence 



County. By C. H. Smyth, jr 



202 33d Report of the State Entomologist, 1917. ByE. P. Felt 

 203-4 High Grade Silica Materials for Glass, Refractories and 



Abrasives. By R. J. Colony 

 205-6 Report of the State Botanist for 191 7. By H. D. House 

 207-8 Director's Report for 19 17 



209-10 Pleistocene Marine Submergence of the Hudson, Cham- 

 plain & St Lawrence Valleys 

 2 1 1- 1 2 Geology of the Lake Placid Quadrangle 

 213-14 Geology of the Schroon Lake Quadrangle 



The State Museum Bulletin is now issued as a regular monthly 

 periodical. This arrangement holds back in some degree the nimiber 

 of the reports which can be issued in any one year, as it seems 

 impracticable with the present service to issue more than one a 

 month, while it might be possible for the staff to prepare more than 

 twelve a year. 



