PROFESSORS JAMES D. DANA AND B. SILLIMAN.
PROFESSORS ASA GRAY AND WOLCOTT GIBBS,
OF CAMBRIDGE,
PROFESSORS H. A. NEWTON, S. W. JOHNSON,
GEO. J. BRUSH AND A. E. VERRILL,
OF NEW HAVEN.
VOL. III.-[WHOLE NUMBER, CHI.]
WITH TWO MAPS AND THIRTEEN PLATES.
PRINTED BY TUTTLE, MOREHOUSE & TAYLOR, 221 STATE ST.