Page:Popular Science Monthly Volume 63.djvu/289

From Wikisource
Jump to navigation Jump to search
This page has been validated.
THE PROGRESS OF SCIENCE.
285

Scenes from the Ptarmigan Group.

Retrieved from "https://en.wikisource.org/w/index.php?title=Page:Popular_Science_Monthly_Volume_63.djvu/289&oldid=6705144"