U. S. GEOLOGICAL SURVEY 



BULLETIN 614 PLATE IX 



LATOURELLE FALLS. COLUMBIA RIVER. NEAR LATOURELLE, OREG. 



The small tributary stream here, unab!e to cut down its bed as rapidly as the main CnU,rr.\.;. ^ ^ ■ t. 



afall. (Compare PI. VIII.) The lava adjoming the lower paVof the fa^MlncJT 



Pnotogra^h copyrighted by Weister. s « i wer part or the falls illustrates columnar structure. 



