39
YELLOWSTONE EXPEDITION OF 1870

METEOROLOGICAL OBSERVATIONS OF THE YELLOWSTONE EXPEDITION.


 

Date.
 

 

Station.
Aneroid
barometer.
Thermometer
Altitude.*
Remarks
1870.
   
°
Feet.
Worked by Burt's tables
Aug. 22
Fort Ellis, Montana TerÜ
25.20
62
  Morning.
Aug. 22
         do
25.25
92
4,911
Noon; mean of 2 observ'ns: altitude
Aug. 22
Bozeman Divide
24.10
70
6,140
Noon.
Aug. 23
Trail Camp
24.30
54
5,803
Morning.
Aug. 23
Butler's Ranch
25.10
40
4,837
Evening, stormy weather.
Aug. 24
         do
25.10
40
4,837
Morning, stormy weather.
Aug. 25
Yellowstone Cañon
25.10
40
4,837
Morning.
Aug. 25
Gardiner's River
224.80
77
5,383
Evening.
Aug. 26
         do
24.80
49
5,215
Morning.
Aug. 26
Crossing Divide
23.10
72
7,331
Noon.
Aug. 27
Antelope Creek
23.80
57
6,367
Morning.
Aug. 27
Hot Spring Creek
23.60
60
  Evening.
Aug. 28
         do
23.70
46
  Morning.
Aug. 29
         do
23.70
45
6,546
Morning; mean of 3 obs'ns: altitude.
Aug. 29
High Mountain South
21.60
65
9,113
Noon.
Aug. 29
Washburn's Peak
20.80
50
9,966
     Do.
Aug. 30
Camp Jordan
23.00
50
7,270
Morning.
Aug. 31
Near Falls
22.60
46
       Do.
Aug. 31
         do
22.70
58
  Evening.
Sept    1
         do
22.50
32
7,697
Morning; mean of 3 obs'ns: altitude.
Sept.   1
Mud Springs
22.75
60
  Evening.
Sept    2
         do
22.60
32
  Morning.
Sept.   3
         do
22.60
32
7,487
Morning; mean of 3 obs'ns: altitude.
Sept.   4
Yellowstone Lake
22.60
58
  Morning.
Sept.   5
         do
22.50
44
       Do.
Sept.   6
         do
22.40
38
       Do.
Sept.   7
         do
22.50
32
       Do.
Sept.   7
Langford's Peak
20.35
65
10,327
Noon.
Sept.   8
Yellowstone Lake
22.50
32
  Morning.
Sept.   9
         do
22.60
45
       Do.
Sept.  10
         do
22.50
44
       Do.
Sept.  11
         do
22.60
55
       Do.
Sept.  12
         do
22.60
55
       Do.
Sept.  13
         do
22.40
40
  Morning, rainy and snowing.
Sept.  14
         do
22.50
36
  Morning, snowing hard
Sept.  15
         do
22.60
44
  Morning, rainy.
Sept.  16
         do
22.70
44
  Morning
Sept.  17
         do
22.65
50
       7,714  3-5
Morning. á
Sept.  18
Snow Camp
22.70
40
7,535
Morning, rainy.
Sept.  19
Firehole Basin
23.50
43
6,626
Morning, clear.
Sept.  20
Madison River
23.50
38
6,594
Morning.
Sept.  21
Madison Cañon
23.60
32
6,434
     Do.
Sept.  22
Madison River
23.70
40
6,382
     Do.
Sept.  23
Madison Settlements
25.00
38
4,937
     Do.
Sept.  24
Madison Bridge       No observations.
        *Altitudes calculated from an ocean-level barometer, 30 inches; thermometer, 60°.
        ÜFort Ellis, Montana Territory, latitude, 45° 45'; longitude, 110° 53' west.
        áRainy. Mean of 15 observations. Altitude.
These altitudes all fall short, as the Aneroid barometer does not indicate with accuracy above 5,000 feet.

                                                                                                                                                G. C. DOANE.
                                                                                                                            Second Lieutenant Second Cavalry.
                                                                                                                   _________
 

                                                                              HEADQUARTERS DEPATRTMENT OF DAKOTA
                                                                                                                   St. Paul, Minnesota, February 8, 1871.

Respectfully forwarded to the Adjutant General of the Army, with the following remarks:

On the 14th day of August, 1870, Mr. H.D. Washburn, surveyor general of Montana, requested an escort for a party desiring to determine by exploration the location of the lake and falls of the Yellowstone. I directed that the escort be furnished, and that an officer be sent with it who could make a report of the trip, as well as a map of the country passed over. Second Lieutenant G.C. Doane, Second Cavalry, was the Go to next page



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