THE
AMERICAN
JOURNAL OF SCIENCE.
Editor: EDWARD S. DANA.
ASSOCIATE EDITORS
Professors GEO. L. GOODALE, JOHN TROWBRIDGE, H. P. BOWDITCH and W. G. FARLOW, of Cambridge.
Professors H. A. NEWTON, O. C. MARSH, A. E. VERRILL and H. S. WILLIAMS, of New Haven.
Professor GEORGE F. BARKER, of Philadelphia, Professor H. A. ROWLAND, of Baltimore, Mr. J. S. DILLER, of Washington.
FOURTH SERIES.
VOL. I—[WHOLE NUMBER, CLI.]
Nos. 1—6.
JANUARY TO JUNE, 1896.
WITH THIRTEEN PLATES.
NEW HAVEN, CONNECTICUT.
1896.
