Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXIV. No. IS. — April, 1899. 



CONTRIBUTIONS FROM THE HARVARD MINERALOGICAL 



MUSEUJVL 



VII. — O.V HARDYSTONITE, A NEW CALCIUM-ZING 



SILICATE FROM FRANKLIN FURNACE, 



NEW JERSEY. 



By JoHx E. Wolff. 



