162 
MAGNETIC OBSERVATIONS 
OBSERVATIONS—Continued. 
RESULTS FOR INDEX ERRORS OF NEEDLES. 
Station. 
Index error of 
needle A. 
Index error of 
needle B. 
Cambridge Observatory._ 
+ 15 02 
+ 10 50 
+ 14 30 
+ 10 32 
+ 13 42 
+ 19 47 
+ 11 50 
+ 8 00 
4- 7 52 
+ 10 02 
4- 0 17 
Cambridge Observatory__ 
Cambridge Observatory_ 
Albuquerque_ 
Albuquerque_ 
Albuquerque_ 
Zulu____ 
Means_ 
4- 15 04 
+ 
CO 
OO 
INCLINATION AT CAMBRIDGE OBSERVATORY, MAY 10, 1854. 
O ' " 
Needle A, with deflectors.-------74 28 l(i 
Needle A, with deflectors_______ 74 39 07 
Needle B, with deflectors...-...-.... 74 29 58 
Needle A, with deflectors___--------- 74 34 21 
Needle B, direct_____—.-.. 74 31 00 
Needle A, direct.....---- 74 38 02 
Mean inclination.... 74 33 27 
