12b 



Canadian Arctic Expedition, 1913-18 



Beenaed haeboue. North coast of Canadian mainland. In Dolphin 

 and Union Strait. — In June, the time is uncertain as the time errors are not noted. 

 In December, the time error is indicated; and the time is reliable as finally 

 corrected. The range is determined in the manner already explained. 



Date. 

 1915. 



Tide. 



Range. 



Spring. Neaps, 



Date. 

 1915. 



Moon. 



Moon's 

 Transit. 



Luni-tidal 

 interval. 



June 12.. 



" 15. 



Dec. 7. 



Springs . 



Feet. 

 1-19 

 119 

 1-73 



Dec. 



Mean of two 

 Springs 



1-46 



Establishment. 

 Value for transit between 11 h. and 13 h. — 



At Upper transits 



At Lower transits 



Mean 



Less chronometer error 



Resulting Establishment. 



10. 

 10. 



11. 



New. 



Average. 



Upper . , 

 Lower. . 

 Upper. , 

 Lower. . 

 Upper. , 

 Lower. . 

 Upper. , 

 Lower. , 

 Upper. 

 Lower. 

 Upper . 

 Lower. 

 Upper. 

 Lower. 



H. M. 



7 :53 



6 :58 



7 :56 



6 :25 



7 :33 



6 :23 



7 :03 

 6 :04 

 6 :50 

 6 : 12 

 6 :36 

 6 :11 

 6 :52 

 6 :15 



6 :48 



These values are corrected for watch com- 

 parisons, but not for chronometer error. See final 

 result opposite. 



The marked alternation in the time values in the early part of December 

 will be noted. The moon was at maximum declination South on December 6. 



Peince of Wales steait. Near Armstrong point. — Observations for 

 one month, from October 8 to November 8, 1915. The ranges for the Spring 

 and Neap tides are based on the four consecutive differences between high and 

 low water, which give the greatest average after the new and full moon, and 

 the least average after the moon's quarters. 



