24 RECORD AND RESULTS OF 



We find the distances: — 



Third Island to Gape Isabella, 34.12 st. miles, or 29.65 naut. miles. 

 " " Cape Patterson, 46.39 " 40.30 



The latitude and longitude of these cax^es we deduce from the known position 

 of Third Island,^ viz: latitude 78° 17' 45", longitude 73° 06' 00", and the known 

 variation, viz : 9f ° west. Forming the spherical triangle pole, Third Island, Isabella 

 (or Patterson) of which is given the colatitude of Third Island, the distance to 

 Isabella (or Patterson) and the included spherical angle, we find — 



Cape Isabella, latitude '78° 22'.4 longitude 15° 30'.8 



Cape Patterson, " IS 46.1 " 75 30.5 ' 



We have also a direct determination of the latitude of Cape Isabella by Dr. 



Hayes, viz : — 



Meridian altitude of sun, lower culmination, July 28th, 1861. 



20 

 Observed double alt., 14° 1' 30" T = + 49° 

 Index correction, 00 B = 29'". 9 at 58° 



Observed altitude, 7 45 



Refraction — par., — 7 It ; ' ■. 



Semidiameter, + 15 48 



Minimum altitude, 7 09 16 



S at apparent midnight, 18 47 09 



^ 78 22 07 which agrees closely with the above geodetic latitude. 



McGary Island, opposite Littleton Island, Smith Stkait. 

 Observations for latitude of McGary Island, at southw^est end of Island, July 6, 1861. 

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

 2© 

 68^^ 04' 00" T = + 42° 

 Index correction, ^ + 1 00 B = 29'».4 at 54° 



Altitude, 34 02 30 Assumed longitude 4'' 53^'" 



Refraction — par. , 

 Semidiameter, 



Maximum altitude, 

 S at apparent noon, 



^ 78 23 03 Latitude of McGary Island. 



On the 12th of June 1855, Kane^ determined the latitude of Littleton Island and 

 found 78° 22' 01". I adopt the mean of these determinations, or 78° 22' 32" for 

 the channel between the two islands. 



34 



02 



30 



— 



1 



20 



+ 



15 



46 



34 



16 



56 



22 



39 



59 



1 See accompanying chart of Port Foulke and vicinity, scale 1 : 170 000. 



' Smithsonian Contributions, 1860 : Kane's Astronomical Observations in the Arctic Seas, p 44. 



