_Surprise Creek_--P: 9--1885--U. S. G. S.--Its course, as made known by recent explorations, was surprisingly different from that which earlier explorations had indicated. _Tangled Creek_--J: 4--1885--U. S. G. S.--Characteristic.--A hot water stream which flows in numberless interlaced channels. _Thistle Creek_--J: 10--1885--U. S. G. S.--Characteristic. _Thoroughfare Creek_--R: 13--1885--U. S. G. S.--Its valley forms part of a very practicable route across the Yellowstone Range. _Timothy Creek_--G: 13--1885--U. S. G. S.--Characteristic. _Tower Creek_--D: 10--1870--Washburn Party--From "Tower Falls," which see. _Trail Creek_--O: 12--1873--Jones--From an elk trail along it. _Trappers' Creek_--P: 13--1885--U. S. G. S.--A great beaver resort. _Trout Greek_--I: 9--1885--U. S. G. S.--Characteristic. _Violet Creek_--I: 8--1872--U. S. G. S.--Characteristic.--"We named the small stream Violet Creek, from the profusion of violets growing upon its banks." Peale. _Weasel Creek_--K: 9--1895--U. S. G. S.--Characteristic. _Willow Creek_--H: 14--1885--U. S. G. S.--Characteristic. _Winter Creek_--E: 6--1885--U. S. G. S.--Characteristic. _Witch Creek_--O: 8--1878--U. S. G. S.--Probably from the prevalence of hot springs phenomena along its entire course. _Wolverine Creek_--R: 8--1885--U. S. G. S.--Characteristic. _Yellowstone River_ (8,100 and 5,360)--U: 16 (enters map); A: 5 (leaves map).--See Part I, Chapter I. APPENDIX A. IV. WATER-FALLS. [Figures in parentheses indicate approximate heights of falls in feet. These in most cases are not to be relied upon as strictly accurate, there having been no published record of actual measurements, except in the case of the Yellowstone Falls.] _Collonade Falls_--F: 3--1885--U. S. G. S.--Characteristic. _Crystal Falls_ (129)--G: 8--1870--Washburn Party.--Characteristic.--The total fall includes three cascades. _Fairy Fall_ (250)--K: 4--1871--Barlow.--Characteristic. _Firehole Falls_ (60)--I: 4--Takes name from river. _Gibbon Falls_ (80)--I: 5--Takes name from river. _Iris Falls_--P: 3--1885--U. S. G. S.--Characteristic. _Kepler Cascade_ (80)--L: 5--1881--Norris.--For the son of Hon. John W. Hoyt, Ex-Governor of Wyoming, who accompanied his father on a reconnaissance for a wagon road to the Park in 1881. Norris speaks of him as "an intrepid twelve-year old" boy who "unflinchingly shared in all the hardships, privations, and dangers of the explorations of his father," which included many hundred miles of travel on horseback through that difficult country; and in admiration for the lad's pluck, he named this cascade in his honor. _Lewis Falls, Upper_ (80)--P: 7--Takes name from river. _Lewis Falls, Lower_ (50)--Q: 7--Takes name from river. _Moose Falls_--R: 6--1885--U. S. G. S.--Characteristic. _Mystic Falls_--L: 4--1885--U. S. G. S.--Characteristic. _Osprey Falls_ (150)--D: 6--1885--U. S. G. S. _Ouzel Falls_--P: 3--1885--U. S. G. S.--Characteristic.