20 



RECORD AND RESULTS OF 



Pocket sextant' . 



58° 



16' 



Index correction . 



— 1 



28 





56 



48 



Altitude . . . 



28 



24.0 



Refraction — par. . 



— 



1.8 



Semidiameter . . 



+ 



15.9 



Maximum altitude 



28 



38.1 



S at apparent noon 



18 



44.4 



Camp Frazer, Smith Sound. 



Observations for latitude of camp, May 14th, 1861. 

 Meridian altitude of the sun. Dr. I. I. Hayes, observer. 



T = + 28° 



B = 30'°. 3 at 6T° approximately. 



Approximate longitude 4'' 42^° 



^ 80 06.3 



Farthest Camp, Kennedy Channel. 



Observations for latitude of camp, May ITth, 1861. 

 Meridian altitude of the sun. Dr. I. I. Hayes, observer 

 2© 

 Pocket sextant . . 56° 52' T = + 22° 



Index correction . . — 1 31 B = 30'". at 53° approximately. ' 



Approximate longitude 4'' 35^'^ 





55 



21 



Altitude . . . 



2T 



40.5 



Refraction — par. 



— 



1.8 



Semidiameter 



+ 



15.8 



Maximum altitude 



27 



54.5 



S at apparent noon 



19 



26.0 



Pocket sextant . . 



01° 



14' 



Index correction . 



— 1 



30 





59 



44 



Altitude . . . . 



29 



52.0 



Refraction — par. . 



— 



1.1 



Semidiameter . . 



+ 



15.8 



Maximum altitude 



30 



06.1 



{ at apparent noon 



20 



04.6 



81 31.5 



Camp Leidy, Smith Sound. 

 Observations for latitude of camp, May 20th, 1861. 

 Meridian altitude of the sun. Dr. I. I. Hayes, observer. 

 20 



T = + 22° (about) 



B = 29'°. t at 52° approximately. 



Approximate longitude 4'' 44°° 



79 58.5 



' This pocket sextant (Gilbert's No. 3) left in the same condition as on the return from the northern 

 journey, was handed to me by Dr. Hayes for examination. I found the adjustment of the perpendi- 

 cularity of the two mirrors quite perfect ; the index error by means of a sharp vertical line, was 

 1° 30' on the arc, and by means of four measures of twice the sun's diameter 1° 32' on the arc, the 

 correction was therefore — 1^ 31'. 6. February 5, 1862. — Chas. A. S. 



