This page has been validated.
28
CLIMATIC CYCLES AND TREE-GROWTH.
few isolated peaks. The mountains are covered with pines from their crests to a little below the level of the city.
This Prescott group was obtained in 1911 for the purpose of testing the conclusions derived from the Flagstaff trees some years earlier.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Climatic_Cycles_and_Tree-Growth_Fig_6.jpg/570px-Climatic_Cycles_and_Tree-Growth_Fig_6.jpg)
Fig. 6.—Annual growth of trees near Prescott, Arizona.
It consists of 67 trees selected in 5 subgroups depending on their nearness to town. The farthest was 10 miles southeast and the nearest was 1 mile south. It was apparent that the agreement between growth and precipitation increased as the location of the actual rainfall station was approached. The nearest subgroup, containing 10