GEOLOGICAL SURVEY OF NEW JERSEY 



HENRY B. KUMMEL, State Geologist 



The Clays and Clay Industry 



of New Jersey 



BY 



HEINRICH RIES 



HENRY B. KUMMEL 



ASSISTED BY 



GEORGE N. KNAPP 



Volume VI of the Final Report of the State Geologist 



TRENTON, N. J.: 



MacCrellish & Quigley, Book and Job Printers. 



