Page:Climatic Cycles and Tree-Growth - 1919.djvu/47

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


DOUGLASS PLATE 4
A Climatic Cycles and Tree-Growth Plate 4A.jpg
B Climatic Cycles and Tree-Growth Plate 4B.jpg

A. Section of Scotch pine from Ös, Norway.

B. Section of Scotch pine from Dalarne, Sweden.