26 
REPORT— 1847 . 
The form of tht cy¬ 
linders is seenbytUu- 
nexed figure; fweisie 
CTlinder; osoditietk 
pivots of the aiii; tiny 
move inT'sIleUtin 
of a transit, the ^ t 
being pressed t 
polished surface. IW 
wheel e/ sen-es for turning the crlinder. By what 1 have belt said 1 ^ 
o giw a gencrnl idea of the construction of the inutninients : the mecbaoiai otf I 
^ually employ is very difTcrent. As in all similar cases, numerous trials wen m* 
LMary to make the instruments practicallv accurate and convenient for use. 
i nave now got two magnetic observatones, the old one underground, whcBla** 
placed the magnetographic instruments, and anotlier connected with the libtim 
Where we continue to observe - - ’ ’ ' ** ’- 
h. 
Afternoon 1. 
ft 
2.- 
ft 
3.' 
*1 
4. - 
ff 
5. - 
f 
6.- 
tf 
8. - 
Night. 
Morning 
7.- 
9t 
8. * 
ff 
9. > 
ff 
10.- 
tf 
II. - 
Noon 
12. - 
Afternoon 
1. -f 
99 
2.-t 
ft 
3.- 
tf 
4. - 
ff 
a. - 
ft 
6.- 
ff 
8. -- 
Night. 
Morning 
7. ~ 
ft 
8.- 
9.- 
• f 
10. - 
n 
II. — 
Noon 
12. - 
Mnrch 1(5 (nuon) ta 
aiorch la (Duon). 
an 
ipril 84 {neou). 
IIS 
si 
0-006I7!+0-3, 
Jt»y i ,nonn) to 
6 (ooD»}- 
Is! 
” tliv. 
0'00fi2-l 
— 0 ' 3 S|riI -8 
- 2 - 17 li 8-6 
-2-95fi7-l 
— 5‘5!>l52'2 
-3-4252-8 
-0*C2|51'1 -O*9|-C'3253*3*,+0'2 
TUrri , 1 
0-0 l) 0063 - 2 «t 
.0-3 
-1-77 61-4 ' 
—3'3C58'7 “ 
_5-105j-4 r 
•-6-33 33-2 
■2-H5 59-5 4-0-4 
-.’»*.'17|52-rI—0-4 
— 5-B5,5J-8—0-2 
— 3-05 aS’j 
-2-4157-8 
-MltfiO-O +0-1 
-MO.COO-fO-I 
- 1 ' 81 ! 58 - 9 - 0-1 
-2-83,56-9 
“3-83 ss-ol+o-a 
~4-l2 54-®+0-l 
■4-24 34-21-f 0-8 
■3*28 52-4 -f 0*2 
•3*82 31*3‘-f0*3-9-7047-7 
•C-l8^50-al-f 0-2 -9-S74M 
•5'G5|52-0 -0-1 
-9-22,48-l 
-9-07}48-5 
-8-34 49-9 
-6-75 52-7 
-4-37:37*l 
~2-4260-6 
_l-46'62-2 
-l-40!fi2-l 
- 2 -M; 60-5 
-3-68 o8-3 
—4-77,56-2 
-6-2753-9 
nfcai'W*' 
i t ■ 
1 
-s" ^ 
4 - 0 - 22 , fiC'S 
- 1 )- 1559-9 
5fi-l 
- 3 - 175 *^ 
-W 
•4-2154-2 
■2-G-lj37-I 
•l- 34 l 59 -a 
+0-3 
+0-3 
+0-4 
- 9 -OS. ... 
-637 52-8 
—1-2957-1 
-2-03C1-0 1+0-1 
+ 0 - 21 - 5-99 «;2+«J 
1(^1 - 4 - 95 ^ 1 ^ J 
fl-fl - 2-27 
-o-i+o-i?g|;^ 
_ 253 wfl'j! 
_ 3 -l 65 i'^ ^ 
- 0-2 
+0-1 
-0-3 
-0-3 
0-0 
-0-3 
+0-1 
ft.« 58 -S 
•ion of the magneto 
prciacd in minutes. 
OUT' 
These observations 2 or 3 minutes too late. 
