Page:Popular Science Monthly Volume 82.djvu/335

Rh after a thorough study of the different phases of this many-sided problem. It is easy to see why different observers, under different conditions, have reached such divergent results.

But these problems do not directly concern the climatologist. He is satisfied if he can make clear, as he sees it, the influence of the forest as a control of climate. If his statements are often disappointingly broad and generalized, it is because he has not the needed scientific basis for making them otherwise.