BULL. GEOL.-SOC. AM. 



VOL. 27, 1915, PL. 2£ 



COPPERAS POND, NEW YORK 



Five and one-half miles south of Clintonville. Looking 

 down from the southwest bank. Plunge basin in Wilmington 

 Lake outlet channel. The extinct falls in the woods in the 

 upper half of the photograph. Photograph by EL L. Ailing, 

 1915. 



