A, D. Bache on Magnetical Observations in Maine. 149 
observations, the values of the magnetic moment of the magnet 
are subjoined as resulting from the monthly determinations dur- 
j at i 4 i - 13 L 2 1 t PS ee eee 
#ro [i a 
6.BL Bs 
Dp. a 
‘ 
0.4; e 
o.2/F : i 
var —— 7 
4 
oO2F ~\ — 
’ 
64h = 
1 \ 
0.6 io 
: ; 
0.8 |. 
‘ ’ 
1 sae. a IS Me doer} [eet l 1— 
ce oe ul i o 
= ie] & se @ = 4 2 Bi 5 6 uw z 
3 LL 5 ae | = = Oe amd a) 
| ing the last two years when its magnetic condition had become 
: nearly constant. 
Magnetic moment of magnet A at 62° Fahr. 
1962. July, 0°4017 1863,  0°4004 
ug., “4015 "3999 
Sept., 4013 ‘4003 
ct, -4016 -4008 
Nov., 4012 -4003 
| Dec., *4009 -4000 
: 1863. Jan. *4007 1864, "4002 
3 e 4006 4001 
Mar., “4007 -4003 
Apr, 4008 “4003 
May, 4008 ‘4007 
June, 4006 4001 
Table of observed values of the horizontal force. 
Mean 
1860. 1861 1962. 1863. 1964, | 1860-64, 
5 years, 
an., 3298 | 3306 | 3297 | 3304 | 3308 | 3303 
Feb,, | 3-299 3311 | 3300 | 3-304 | 3308 | 3-304 
3300 | 3308 | 3302 | 3307 | 3311 
April, $311 8°307 3-302 3314 3313 
ay, 3-309 | 3315 | 3307 | 3318 | 3315 
June, 3316 | 3309 | 3814 | 3-320 
July 3315 316 | 3305 | 3313 | 3320 
ug, | $306 | 3306 | 3306 | 3-311 : 
Sept., 3307 308 3:304 3-308 ones 
3°307 ‘997 | 3303 | 3-306 : 
| Nov., | 3-308 297 | 8-304 wank 
Dek, 3309 297 | 3302 | 3-308 ae 
Mean, | 3307 | 3307 | 3308 | 38310 
Am. Jour, Scr.— 
—Sxrconp Ssriss, Vou. XLI, No. 125,—Szrr., 18 
20 
