NO. 6.] 



SLEDGE-EXPEDITION. OBSERVATIONS 1895. 



117 



The weather being still clear and calm with severe cold, the former value of 4h may be 

 assumed, and 4y = dh for noon ; the difference of 2' from morning to noon assumed above 

 being perhaps somewhat small, the morning latitude has been taken as 85 34', or ^/y = 6'. 

 As the observations were taken very near the prime vertical, its influence is very small. The 

 result is then: 



LT-I = 5t 44m Qs and E. Long. = 5^ 

 1895, April 26. Bar. 29.65 in., Therm. - 31.5. 



29< - J = 85 22' - 



The meridian altitude, which gives <f = 84 47', was taken at the camp of the preceding 

 day, while the other observations were made nearly 4 hours after the departure from this place. 

 Course nearly S by compass. The above values have been computed with y> = 84 42', corres- 

 ponding to 6 miles advance in the 4 hours. 



Though the temperature was still very low, the weather had changed since the last ob- 

 servation. Some days before, snow had fallen, and the sky was now veiled. Assuming therefore 

 Jh = 4<f = 0, the mean of the results is 



LT-I = 7h 26m 40s an d E. Long. = 5^ 6m 45*> - 4 = 76 41' - ^. 

 The magnetic declination has been computed by means of these values. 



1895, May 5. Bar. 29.90 in., Therm. - 22. 



The meridian altitude, which gives y = 84 31', was taken an hour and a half after the 

 departure from a resting-place at which all the other observations were taken. For the morning 

 observations, 84 33' was assumed. The mean of the above values of LT I (which was used 

 for the observations by compass), supposing the dip of the horizon to have been normal, is then 



