The University of the State of New York 



Science Department, November jo, i^i8 



Colonel John H. Finley 



President of the University 



My Dear Sir : I beg to transmit to you herewith and to recom- 

 mend for immediate printing, as a Bulletin of the State Museum, a 

 manuscript entitled '' High-grade Silica Materials for Glass, Refrac- 

 tories and Abrasives/' which has been prepared, at my request, by 

 Mr R. J. Colony. 



It is believed that this report meets a widespread demand for 

 information as to the New York supplies of these materials. 



Very respectfully yours 



John M. Clarke 



Director 



Approved for publication this 8th day of January, ipip 



5%>^^^^ 



Acting President of the University 



