102 



THE POPULAR SCIENCE MONTHLY 



The " Carnegie." 



amounts running up to one degree and 

 a half, i. e., the compass was found to 

 point farther to the west of north than 

 indicated by the charts. On the por- 

 tion of the trip from St. John's to 

 Falmouth, an error in the reverse direc- 

 tion was revealed, showing that the 

 compass did not, in general, point as 

 far west as given by the mariner's 



charts — the errors almost reached a 

 degree. 



The effect of these chart errors, on 

 account of their systematic and pe- 

 culiar run, is to set both inward- and 

 outward-bound vessels towards Sable 

 Island or Cape Race whenever sole re- 

 liance must be placed upon the com- 

 pass, as is the case when no sun or 



