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

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