Page:Popular Science Monthly Volume 28.djvu/378

From Wikisource
Jump to navigation Jump to search
This page has been proofread, but needs to be validated.
366
THE POPULAR SCIENCE MONTHLY.

NATURAL BRIDGE OF AGATIZED WOOD.


Retrieved from "https://en.wikisource.org/w/index.php?title=Page:Popular_Science_Monthly_Volume_28.djvu/378&oldid=6460113"