PLATE 25 



Fig. 3. Buuchgi-ass habitat in the prairie area one mile soutli of Lyon 's 

 Ferry, June 24, 1914. The principal plant is the wheat buni-hgrass (Agropyron 

 spicaUtm). 



Fig. 4. The Touchet Valley, two miles east of Prescott, July 9, 1915. The 

 cottonwood-willow habitat is shown in typical development along the river. 

 The conspicuous trees are cottonwooils (PopuJus trichocarpa) . The hills and the 

 greater part of the valley were natively covered by bunchgrass, but now are 

 nearly entirely in cultivated fields. 



[346] 



