22 



RECORD AND RESULTS OF 



Determination of Longitudes f 07' the Northern Journey. — These principally depend 

 upon observed bearings of known headlands to the sonth, and some sextant angles. 

 A few chronometric determinations depend upon the following chronometer correc- 

 tions as found at Port Foulke, April 16th, and May 30th, and June 1st, 1861. For 

 rate we are obliged to use the previously determined value, viz: ST = - — 2".5 since 

 the j)ocket chronometer had evidently stopped more than an hour on or before May 

 13, occasioned by a neglect to wind at the proper time 



April 16, 1861 AT at Port Foulke = — 8" 53^3 



Chronometer comparisons, May SOtli, 1861, at Port Foulke, two days after Dr. Hayes' return. 



iiT of pocket chr. 

 May 30. 



+1'' 12m l6^9 



Pocket chro'r 

 May 30. 



9" 00°^ 5P 



Chronom'r 

 2007. 



31, jm 



A^of 2007 

 June 7 and 8. 



—4" 47"" bV. 



June 1. 

 7"= 34-" 56'.2 



June 1. 



—4" 47" 52'.2 



jrof 



2007. 



+ 0106 



Mean time of 

 comparison. 



gh ^.jm Q^s^g 



ATof 2007 



May 30. 

 .4h 47m 52SJ 



Mean time of 

 comparison. 



10" 13" 07^9 



aT of pocket clir. 



June 1. 

 ^^h 12- IP. 6 



ST of pocket chro- 

 nometer. 



—2^6 



ocket chronometer 



3>' 



53" 



52^ 



3 



58 



48 



3 



59 



52 



4 



00 



26 



Foggy Camp, Smith Sound. 

 Observations for longitude. May 13. I. I. Hayes, observer. 

 2 by pocket sextant. 



3 59 42 



Mean time of observation. 

 Chronometer time, 



A T Port Foulke, 



Difference of longitude. 

 Longitude of Foggy camp. 



40° 37' 



20 

 42 28 

 42 22 

 42 17 



42 22.3 



Assumed latitude 79° 55'. 5, longitude 4'" 47" 



T = + 20° (about) 



B = 30". at 51° approximately. 



Index correction — 1° 28'. 



Refraction — par. 



/i= 19° 58'. 1 

 < =80 7' 10" 



2'7 



S = 18° 32' 18" 

 £J = _3" 53^4 



16" 35' 

 56 47 



+ 1 

 + 1 



19 48 

 12 58 



6" 50= 

 45" 10= 



Deduced from correction of May 30th. 



Foggy camp east of Port Foulke. 



(See determination from bearings further on.y 



ket 



chronometer. 



.^h 



09" 



55= 





11 



17 





12 



05 



7 



11 



06 



7'- 



IB" 



05= 





14 



55 



Camp Ha-wks, Smith Sound. 

 Observations for longitude, May 22. I. I. Hayes, observer. 

 2 O by pocket sextant. 



T = + 13° (about). 



B = SO'".! at 58° approximately. 



Index correction — 1° 32'. 



7 14 00 



29° 24' 

 19 

 14 



29 19 



20 

 30° 24' 

 18 



30 21 



Approximate longitude, 4'' 53" 



Refraction — par. — 4'.0 



/,, = 14° 05. '0 

 i = 127 39' 47' 



6 = 20° 32' 50" 

 i; = _3"> 34=. 4 



Mean time of observation, 

 Chronometer time, 



A T Port Foulke, 



Difference of longitude, 

 Longitude of Camp Hawks, 



S'^ 27" 05" 

 7 12 33 



+ 1 

 + 1 



14 32 

 12 36 



1 56 

 50 04 



Deduced from correction of May 30th. 



Camp Hawks east of Port Foulke. 



(See determination from bearings further on.) 



