506 



i:\i-KDrnoN TO POINT BABKOW, ALASKA. 



Tabulations of obserrc.il chronometer corrections, United States meteorological and magnetic polar xta- 



tion, Ugl-aamie, Alaska. 



Chronometer, Negus No. 544 (mean time). 



1881. AT 1 



November 28 +l k 51"39- 



November 30 1 44 04 



1881 



March SO.. 

 April 11. 

 April 17. 

 April 23 

 Mav 18.. 

 Ma'v27.. 

 May 27.. 

 Jane (I . . 

 June 24 



30 48 



28 01 



28 19 



29 15 

 28 14 

 27 48 

 U7 no 

 27 20 

 26 30 



1882. AT 



July 7 +0' 61-40- 



Augustl6 50 13 



Septembers 49 14 



1883. 



My3 44 44 



Slay 21 44 15 



Jmiee 43 49 



Jnnel9 ' 43 14 



Jnne28 43 IS 



July 10 42 40 



July 23 42 14 



Chronometer, Fletcher No. 1718 

 (mean time). 



1882. AT 



January 24 + 2 02-59- 



Febrnary4 2 01 38 



March 11 1 59 59 



April28 1 58 58 



May23 1 58 38 



214 



Chronometer, Blunt No. 

 (mean time). 



1883. HI 



April 16 +l h 16-49- 



May 12 1 17 25 



August 9 1 13 34 



Chronometer. Button No. 312 

 (sidereal). 



1882. AT 



February 10 +1* 38- 53- 



February 21 1 36 29 



March 2 1 36 39 



Chronometer, Bond No. 223 

 (sidereal). 



1881. AT 



November 16 +1* i:; : " (>!' 



1882. 



September 29 1 40 40 



November 1 1 40 10 



December 1 1 40 :K> 



December 11 1 40 40 



December 23 1 42 24 



1883. 



January 7 1 39 20 



January 25 1 40 ::2 



MJuch2 1 41 15 



March 18 1 41 35 



Observations for latitude at United States meteorological and- magnetic polar station, Uglaamie, Alaska. 



(April 28, 1882. Sextant, Blunt No. 309. Chronometer, Fletcher No. 1713. Observer, A. C. Dark. Eecordor, E. 1'. [luremU-eii.J 



[June 24, 1882, noon. Theodolite, Fauth & Co. Chronometer, Negus No. 544. Observer, A. C. Dark. Recorder, E. P. Herendeen.) 



[June 24, 1882, midnight. Theodolite, Fauth & Co. 

 Chronometer, ?. Observer, A. C. Dark. Recorder. E. P. 

 Herendeon. The times ^iven do no! rnrrrsponil io the 

 time of lower culmination of the snn : therefore the iiic:!ii 

 of the four smallest readings (supposed to indicate th 

 time of lower culmination) were taken. The disconhineo 

 between the results at upper and lower culminations 

 seems to indicate that the instrument was not adjusted 

 for index error.) 



Observed altituiei. 



Q 5 07' B. 



5 07 L. 



5 86 R. 



5 36 L. 



Mean ...................................... 5 21.5 



Ketractioii and par ......................... 0.1 



5 12~4 

 =23 24 .0 



* =71 48 .4 

 Correction to refraction for displaced zenith . 1 .2 



Corrected 4>m 



71 47 .2 



From observations June 24, noon 4>n =70 46'.2 



Prom observations June 21, midnight *m =71 47 .2 



Mean 71 16.7 



