TO YELLOWSTONE NATIONAL PARK. 
On 
— 
Determination of the latitude by observed double altitudes of Polaris off the meridian. 
Station, Camp Baker, Montana.—Dato, August 5, 1875.—Ref. Circlo, Gambay & Son, 212.—Chronometer, Bond & Son, 202.—Observer, Wood.— 
Computer, Wood.—Bar,, 25'»,30,—Ther., 53°, 
Observed double altitudes. Corresponding times. 
rr hom 8 log cos p == 9,5388061 log sin p 9, 97235 
19 O01 49.5 log A = 3. 6893977 log 4 3, 68940 
02 41.5 _—- —- 
a 03 07.5 log 4 cos p = 3, 2282038 log A sin p 3. 66175 
03° 53.5 = 1691.2 
04 24.5 log (A sin p)? 7.32350 
05 07. oF on log a 4, 38454 
05° 54. Istterm = 28 11.2 log tan A 0, 01817 
06 32, Alti=A = 46 11 53.7 — 
* 204 13 30 07 00. 2dterm = = 53.2 log 2d term = 1, 72621 
720 00 00 19 07 45. — 2d term 53,2 
—_—-— —_—-——— Latitude = 46 40 581 
10) 924. 13 30 19 04 49,45 
92 25 21 
46 12 40.5 
46.8 
46 1L 53.7 
Ratrae th ON, ss cccciccwseecicce ce scien cic taccsiesecaavsceneaenaascwans eile 46.8 
Chron. correct: Jb 12m 358.8 
Dec... 88° 38/ 29” 
O ese seidicn seiceeeses Sarees meee veeetereeees sete 4891” 
hom 8 
A Polaris ........--- edamoweis Gan Gan semaueveen au cemememmacdacoacee cen 1 13 08,76 
Sid. time at mean noon at this station............. wee 
Sid, interval from mean time of culmination 
Retardation of mean on sidereal time..........------- 
Mean time of culmination of star.... = aia 
Error of chron. at time of observation. ......2-.- 2-26. - eee eee eee eee 1 12 35.8 
‘Time by chron. of culmination.........2..20.-00 cece eee eee ee eee ee eee 2 25 44.56 
Clock-time of observation. .-... 22.0... eens eee e cence nese nee cnsenene - 19 04 49.45 
Hour-anslo, py in mean times =. .s044 sence eces con seeeesseesenseeteee 7 20 55.1 
Sidereal cquivalents in arc. .........2 2-22 eee eee ee ee eee ene 110° 13’ 47” 
PUD, BUC sncss se wcmiawemnewind saeeceedeeet ema weesae eee eenecsiser se rood ace 
