Fig. 30. Priest Kiver \'allcy in northern Idaho. Pinii.'y- mojtt irola. 

 'J'sin/a hffer«>i>h(/lln, Abies f/raudln. Thuja pUrntn. In the foreground 

 Lfis'irliit tin h'liuifsrhrtfreit.'iis and ^lf!p1euium Filiv-foemina. 



144 



