University of the State of New York 



BULLETIN 



OF THE 



New York State. Museum 



Frederick J. H. Merrill Director 



No. 35 Vol. 7 



June 1900 



CLAYS OF NEW YORK 



THEIR PROPERTIES AND USES 



BY 



HEINRICH RIES Ph. D. 



ALBANY 



UNIVERSITY OF THE STATE OF NEW YORK 



1900 



