IN THE ARCTIC SEAS. 45 



in vcfei'cncc to the shoreline of the harbor, an important ilatnm, not given before. 

 Tt will be perceived that the only change of importance made in the present map, 

 is the shifting of the shores of Kennedy Channel to the southward to an amount 

 of about nineteen nautical miles ; it is well known that Dr. Kane had adopted 

 the mean positions resulting from astronomical observations and dead reckoning, 

 whereas in my map the astronomical determinations alone have been used. This 

 change I made with the concurrence of Professor Bache, who, in May, 1858, 

 communicated to the Royal Geographical Society, in England, that such a step 

 seemed desirable and proper. The highest point of the shoreline, traced by Mor- 

 ton, on the east side of the Channel, is now placed in latitude 80° 56', and, on the 

 opposite side, the highest point distinctly seen by him is located in latitude 82° 07'.' 

 The following table contains the geographical positions of stations determined by 

 travelling parties, and the latitudes of which have been given above. 



Cape John Frazer 



Cape Prcscott 



Cape William Wood ..... 



Cache Island ...... 



Cape Andrew Jackson . 



Cape JefTerson . . . . ... 



Cape Madison ...... 



Littleton Island ...... 



Cape Alexander 



The following results are taken from a report of Mr. Sonntag's to Dr. Kane, 

 dated September 12, 1855 (at Godhavn). 



Latitude. 



Fitzclarcnce rock 16° 55'. 



Dalrymple rock . . , . . . . .16 30.5 

 Parker snow point ...... 16 04.2 



Cape York 15 56 



Godhavn 69 14.6 



(Note. — In my discussion of the magnetic observations of the expedition the latitudes and longitudes 

 of the stations could only be given approximately, and the results now obtained should be substituted 

 instead of them.) 



Observations in Connection with Twilight. — The following notes, made by Dr. Kane, 

 has been extracted from his Log-Book. In calculating the sun's depression below 

 the horizon, I have applied a correction for horizontal refraction, taking into account 

 the temperature actually observed on that day. 



Oct. 15, 1853. — Last entry of sunlight having been seen. "Astronomically, the upper limb of the 

 sun should disappear at noon, October 25, if the horizon was free, but it is obstructed by a 

 mountain ridge."'^ 



' In a letter (dated Albany, February 29, 1860), Mr. Sonntag expresses himself as follows: "I am 

 very glad to learn that you are going to reconstruct the map, and to reduce the upper portion of it, and 

 I feel confident that, after the reduction is made, it will liave claims to as much accuracy as any other 

 map of any parts of the Arctic Regions." 



" Page 105, vol. I. of the Narrative. 



