UNITED STATES GEOLOGICAL SURVEY 
CHARLES Db. WALCOTT, DIRECTOR 
sl Cpes ed a 
PLOnA Or THE AMBOY., CLAYS 
BY 
JOE NS Sir OuNiGa NE) We) be RY 
A POSTHUMOUS WORK 
EDITED BY ARTHUR HOLLICK 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1895 
