Mars and Its Canals

by Percival Lowell

Phenological quickening, on Earth, [342];

on Mars, [343].

Phison, [221], [231], [249], [258], [266], [267], [316];

continuously double, [213];

connection with Euphrates and Portus Sigaeus, [218], [219].

Phœnix Lake, [330].

Photographs of the canals, [225], [275-277].

Photography, celestial, [271-277].

Physiographic conditions, on Mars, [68], [128].

Pickering, W. H., [330].