APPENDIX. 407 



Variation of the compass by an 



evening amplitude - - - E. 12° 21' 20" 



July 24. Mer. Alt. Star «. Aquil« - - 105° 35' 15" 

 Index error — 4' 7" 



Latitude deduced - - - 45 39 51 



July 25. Qh 44' 22" A. M. Alt. Sun's centre 103° 38' 15" 



3h 49' 24" p. M. Do. Do. - 73 39 45 

 Index error — 4' 00" 



Latitude 45 39 51 



July 26. Mer. Alt. Moon's U. L. - - 77° 8' 30" 

 Index error — 4' 7" 

 Latitude 45 39 55 



Latitude of Lac Travers - - N. 45° 39' 52" 



July 25. 3h 38' 56" A. M.Alt. Moon's U.L. 54° 44' 00" 

 Index error — 4' 00" 



Longitude deduced - - - 96 33 45 



July 26. 9> 37' 45" A. M. Dist. Star «. 



Arietis and Moon's N. L. - 57"^ 4' 5" 

 Index error ■— 4' 7" 

 Longitude 96 39 45 



2h 48' 47" A. M. Alt. Star «. Lyrse 75° 51 ' 15" 

 Error of watch - - - - 0^00 31 



2^ 58' 3" A. M. Dist. Star «. Au- 



rigse and Moon's N. L. - - 99° 4' 5" 

 Longitude - - - - 96 30 30 



Longitude of Lac Travers - W. 96° 34' 30' 



Variation of the compass at Lac 



