50 



BAROMETRICAL AND THERMOMETKICAL OBSERVATIONS. 



APPENDIX D— Continued. 

 III. Routes of detached parties in charge of Lieut. H. L. Abbot, U. S. Topographical Engineers. 



Dote. 



1855. 



sept, e 



si 



Near base of Black Butte. 



Camp 40 A, Mpto-ly-as canon 



do 



Plateau above river 



Camp 41 A, Psuc-see -que creek 

 do 



do 



On plateau north of creek . . . 



Near Chit- tike creek 



Wain Chuck river 



Highest point of mountain 



crossed by trail 



In small ravine 



Camp 49 A, Nee-Dee springs.. 



Summit Mutton mountains.. 



Tysch prairie 



Divide between two branches 



of Tysch creek 



Camp 43 A, Tysch creek .... 



.do. 



Summit of Tysch mountains. 



In ravine, (dry) 



Fifteen Mile creek 



Eight Mile creek 



Near Five Mile creek 



Camp 44 A, Fort Dalles 



Above Cascades, Columbia 

 river 



Foot of principal rapid 



Lower landing, Cascades of 



Columbia river 



Soutli fork Tysch creek 



Highest point of trail on Mut 



ton mountains 



Summit of wooded hill 



Camp 46 A, surae as Camp42A 



do 



do 



Highest point of mountain 



crossed by trail 



Warn Chuck river 



On bluff above eaBon 



Camp 47 A, Chit-tike creek. .. 

 do 



Hour. 



13 m 



9p. m 



6 a. m 



1 p. m 



6 p. m 



9 p. m 



6 a. m 



8 a. m 



9a. m 



12 m 



2 p. m 



2.40 p. m. 

 6 p. ra.... 

 9p. m. .. 

 6 a. m. .. 



8 a. in 



8.30 a. m. 



12 m 



9 p. m . . . . 

 6a.m... 

 8a.m.... 



10 a. m... 

 11.30 a. m 

 1.30 a. m. 

 2.30 p. m. 

 9 p. m. ... 



2.35 p.m. 



3.10 p. in. 



5 p. m. .. . 

 7.48 a. m. 



1 p. m 



2 p. m . . . . 

 C p. m. ... 



9p. m. ... 



6 a. m. ... 



10 a. in 

 12 m... 

 1 p. in. 

 (i j>. in 

 9 p. in. 



1089 



ioeo 



1089 

 1089 

 1089 

 1089 

 1089 

 1089 

 1089 



1089 

 1089 

 1089 

 1089 

 1089 

 1089 



1089 

 1089 

 1089 

 1089 

 1089 

 1089 

 1089 

 1089 

 1089 



1089 



1089 

 1089 



1089 

 1089 

 1089 

 1089 

 1089 



10 



1089 

 \v>\\ 

 1089 



KM I 



V 



(3 



Inches. 

 26.790 



28.172 

 28.216 

 27.388 

 28.005 

 28.038 

 27.990 

 27.481 

 28.470 

 28.500 



26.823 

 26.931 

 27.069 

 27.088 

 27.072 

 26.940 



27.800 



28.787 

 28.777 

 28.855 

 27.320 

 28.225 

 28.760 

 29.190 

 28.805 

 29.573 



29.855 



39.879 



29.917 

 28.903 



27.142 

 27.136 

 27.138 

 27.108 



26.978 

 28.494 

 28.146 

 28 454 

 38.478 



56.0 

 43.0 

 89.5 

 80.0 

 73.0 

 41.0 

 70.0 

 74.0 

 87.0 



82.0 

 67.0 

 70.0 

 55.5 

 50.0 

 68.0 



85.0 

 63.0 

 33.0 

 61.0 

 75.0 

 80.0 

 83.0 

 84.0 

 55 



65.0 



61.0 

 59.0 



61.0 

 65.0 

 44.0 

 43.5 

 40.0 



54.0 

 42.0 

 84.0 

 78.0 

 70.0 

 40.0 

 62.0 

 67.0 

 80.0 



76.0 

 80.0 

 67.0 

 55.0 

 48.0 

 58.0 



78.0 

 48.0 

 31.5 

 57.0 

 65.0 

 69.0 

 73.0 

 77.0 

 52.0 



62.0 



62.0 

 57.0 



56.0 

 59.0 

 42.0 

 43 5 

 38.0 



Inches. 

 26.698 



28.096 

 28.108 

 27 329 

 28.013 

 28.016 

 28.035 

 27.475 

 28.452 

 28.488 



23.872 

 26.969 

 27.139 

 27.129 

 27.130 

 26.907 



27.769 



28.743 

 28.746 

 28.886 

 27.287 

 28.173 

 28.707 

 29.145 

 28.766 

 29.544 



29.736 



29.765 



28.868 



23.975 

 27.134 

 27.144 

 27.146 

 27.147 



58.0 50.0 26.911 



74.0 i 69.0 28.473 



65.0 61.0 : 29.159 



56.0 55.0 28.479 



50 u 19.0 28.490 



Inches. 



28.102 



28.021 



27.133 



28.816 



27.146 



Feet. 

 3,294 



1,907 

 2,660 



1,964 

 2,527 

 1,531 

 1,504 



3,095 

 3,054 



2,829 

 3,087 



2,207 

 1,246 



1,153 

 2,706 

 1.805 

 1,286 



862 

 1,228 



476 



333 



300 



272 

 1,117 



2,995 



2,833 



2,829 



3,036 

 1.5D3 

 1.810 



Mil.s. 

 10.0 



18.0 

 2.6 



7.7 



1.0 



4.2 



11.5 



4.0 

 3.3 



4.9 

 2.7 



Miles 



0.5 

 2.5 

 6.0 

 7.0 

 5.0 

 2.0 

 5.7 



0.3 



4.2 



75.5 



16.0 

 1.0 



2.4 



8.9 



4.0 



1.0 



636.7 

 639.3 



647.0 

 648.0 



663.7 



667.7 

 671.0 



675.9 



675.9 



667.7 

 BID. 7 

 CM. 7 



Not used on profile ; dis- 

 tance estimated from 

 camp 40. 



On line of profile. 



Mean height deduced 

 from observations on 

 Sept. 6-7, and 22-23. 



Not used on profile. 



Mean height deduced 

 from observations on 

 Sept. 8 and 21. 



Mean height deduced 

 from observations on 

 Sept. 8-9, 20-21, and 

 Oct. 3-5. 



General level of prairie. 



Observations to deter- 

 mine the descent of the 

 Columbia river at the 

 Cascades. 

 Do. 



Do. 



Eight-tenths of a mile 

 south of camp 43 A. 



Mean height deduced 

 from observations on 

 Sept. 8-9, 20-21, and 

 Oct. 3-5. 



Mpan height deduced 

 from observations on 

 Sept. 8 and 21 



