AMERICAN
Journal of Mathematics
PURE AND APPLIED.
Editor in Chief: J. J. SYLVESTER.
Associate Editor in Charge: WILLIAM E. STORY.
With the Co-operation of
SIMON NEWCOMB, H. A. NEWTON, and H. A. ROWLAND.
Published under the Auspices of the
JOHNS HOPKINS UNIVERSITY.
Πραγμάπων ἔλεγχος ού βλεπομένων.
Volume II.Number 4.
BALTIMORE:
Printed for the Editors by John Murphy & Co.
| B. Westermann & Co., | New York. | Trübner & Co., London. |
| D. Van Nostrand, | Gauthier-Villars, Paris. | |
| Ferree & Co., Philadelphia. | A. Asher & Co., Berlin. | |
December, 1879.
