Page:Climatic Cycles and Tree-Growth - 1919.djvu/93

 {|
 * || DOUGLASS PLATE 8
 * | A
 * Climatic Cycles and Tree-Growth Plate 8A.jpg
 * | B
 * Climatic Cycles and Tree-Growth Plate 8B.jpg
 * }
 * | B
 * Climatic Cycles and Tree-Growth Plate 8B.jpg
 * }

A. Section of Scotch pine from Eberswalde, Prussia, showing solar rhythm.

B. Another section from the same forest, showing same rhythm.