134 
INDEX. 
Page. 
Tysch prairie, description of______.___ 86 
Umpqua canon, description of___ 107 
Umpqua mountains, description of_________ 34 
passes through___._ 60 
Umpqua valley, description of__________ 34 
railroad character of_______ 50 
Upper Klamath lake, description of_______ 6G-G7 
route near........ ..... 67-68 
Variation of the needle, abnormal disturbance of_______ 99-100 
Warn Chuck canon, warm springs in_____ 85-86, 90 
Warn Chuck river, canon of.......... 85-86 
Washington, return of the party to___ 111 
Why-chus creek___________ 75 
Willamette valley, climate of--- 34 
railroad character of______ 48 
routes through_________82, 102, 106 
tables of water-courses in- 48-49 
Wright lake. 28, 65 
Yreka, description of_______— 110 
in 1851. * 127 
