

New York State Education Department 



Science Division, March 7, 1907 



Ho m. Andrew S. Draper LL.D. 



Commissioner of Education 



My dear sir: I communicate herewith, for publication as a 

 bulletin of the State Museum, geological maps on the scale of 

 r mile to 1 inch, of the Nunda and Portage quadrangles, accom- 

 panied by a description of the geological structure of these regions 

 and including also a map of Letchworth Park with its geology and 

 a report on the Pleistocene History of the Genesee Valley in the 

 Portage District. 



Very respectfully yours 



John M. Clarke 



Director 

 State of New York 

 Education Department 

 commissioner's room 



Approved for publication this gth day of March 1907 



Commissioner of Education 



