Page:Mars - Lowell.djvu/229

From Wikisource
Jump to navigation Jump to search
This page has been validated.


Plate XX


Lowell - Mars (1896) - Plate 20.jpg

TERMINATOR VIEWS

By Prof. W. H. Pickering

August 24, 1894

A series of unusually marked elevations and depressions upon the terminator at the above hours