= é 
2 : See 
152 Terrestrial Magnetism. af 
No. 5. Mason, Ohio, Lat. 39° 22! NV., Lon, 849 13! W. Aug. 25, 1840. - 
Needle we 1. B North. Needle No. 2. B North; 
eofin-| Fac = Face of in-{ Face of : 
ecunients seal. Dip indicated. strument.| needle. | Dip indicated. 
E. E. MUS E. E. 71°04’ 
w. w. 69 40.5 W. w. 70 57 
w. E. - 71 49 w. E. 71 05 
E. Ww. 69 48 E. w. 70 55 
A A North. : 
E. E. E. E. 71 05 
w. W. Ww. w. 70 38.5 
Ww. | ae w. E. 70 51.5 
E. w. E. w. 70 38.5 
8)567 145 
ee eS a 
Mean, 70 54.1251 Mean, 70 54.312, 
No. 6. Cincinnati, Ohio, Lat. 39° 6! N., Lon. 84° 27! W. Aug. 26, 1840. 
A 
Needle No. 2. <A North. 
: edle No. 1. orth, 
Face of in-| Faceof) 
strument.| needle. Dip indicated. 
E. . 69°25/ 
w. w. TL Ee 
WwW. E. 69 26.5 
E. Beet Sa 33 
B North. 
E. E. 71 40 
w. w. 69 16 
w. E. Fi 27 
E. Ww. 69 23.5 
¢ 8)563 40.5 
Mean, 70 27.56 
ace of in- pec of 
strument. eedle. Dip indicated. 
E. E. 70°3 1.5 
w. w. 70 115 
w. E. 70 33 
E. 7“, 70 13 
B North. 
E. E. 70 32.5 
w. w. 70 35 
Ww. E. 70 32.5 
Bj | ome 
8)563 46 
| Mean, 70 28.25 
No.7. Williamstown, are Lat. 38° 36) N.2 Lon. 84° 30! W.2 Sept. 1, 1840. 
eedie oO. 
‘ace of in-| Face o 
rereaneae needle 
E. E. 
Ww. Ww. 
w. E. 
E. Ww. 68 
A North. 
<. E. 8 58 
w. Ww. 71 10.5 
w. E. 68 59 
E. Ww. 73416 
8)560 32 
. orth, 
Dip indicated. 
019/ 
Mean, 70 04 
8)560 34 
Mean, 70 04.25 - 
eet LST ME ons 
