Page:Popular Science Monthly Volume 58.djvu/514

This page has been validated.
506
POPULAR SCIENCE MONTHLY.

Fig. l. Pyramid Island, Pyramid Lake.

Fig. 2. Tufa Deposits by Pyramid Lake, showing Concentric Structure.

This article is issued from Wikisource. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.