APPENDIX. 



169 



True Bearing of 

 Celestial Object. 



S.E.b.E. 



s.b.E. 



North. 



Amount of Mag- 

 netic Error. 



REMARKS. 





 2 £. 



2 E. 



east ^, was in fact north-east (true,) and 

 I shortened sail at nine A.M., absolutely 

 from not knowing" how to steer. As a 

 farther proof of the decrease in the raag- 

 netic errors, see observation at 11 h. 

 15 ni. east-Q>, having- recently shewn eight 

 points error, (m.) 



North. 



2 E. 



distance, became as belo 



South. 



observations of 



Pole *. 







I ^v 



Ey the sun on this day it was observed, 

 that with our head east, E.b.s., or e.s.e., 

 two, or at most three, points correction to 

 the right or east, which for three days 

 past we had been accustomed to allow, 

 was quite sufficient ; but if the ship fell 

 off to the southward, say s.s.e., (true,) 

 the compasses ail ran round, and shewed 

 her head s.w., or even west ; a proof, 

 when considered v/ith other observations, 

 that with the head even one point to the 

 right or left of the true south, the com- 

 passes changed their errors from easterly 

 to westerly, and vice vei'sa. Thus, by 

 our observations, s.e. <^ and s.w. -^ 

 give south, (true,) applying a certain 

 deviation to the right for the first, and 

 exactly the same proportion to the left 

 for the second, {n). 



Tliroughout this day we found that, 

 with our head N.E., the compasses began 

 to recover themselves, (o.) 



