Mars and its Canals—PERCIVAL LOWELL; Macmillan Co., New York, 1906.

Mars as the Abode of Life—PERCIVAL LOWELL; Macmillan Co., New York,
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Mars—WILLIAM H. PICKERING; Richard G. Badger, Boston, 1921.

"Popular Astronomy"—Astronomical Magazine.

Ovid's Metamorphoses—Trans. by English Authors, Sir Samuel Garth.

Prose translation of Ovid's Metamorphoses—HENRY T. RILEY; G. Bell and
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Phaenomena—Aratus, trans. by G. R. MAIR; G. P. Putnam's Sons, New York.

Hesiod and Theognis—REV. JAMES DAVIES; J. B. Lippincott, Philadelphia.

Festus—PHILIP JAMES BAILEY; Morton and Griswold, Louisville.

Paradise Lost—JOHN MILTON; Houghton, Mifflin Co., Boston, New York,
Chicago, 1896.