358 
Dr. Brinkley’s observations for investigating 
TABLE VIII. continued. 
'•*- . 
Ov 
u 0 
Time 
Bottom 
Refrac- 
Mean Z. D. 
from Me- 
ridian. 
Microscope. 
tion. 
Jan. 1 , 1819. 
1820. 
/ II 
0 * /; 
/ II 
0 / n 
Sept. 8 
E 
S 45*5 
54 34 3 1 * 0 
54 34 5 Z * 9 2 
E 
4 10,0 
34 7*6 
I 20,65 
52,22 
+ ,38 x 
E 
2 27,0 
33 5 Ij 4 
52.35 
+ ,0 9p 
In. 
W 
4 47 *° 
32 48*5 
5 3 * 1 1 
Bar. 30,05 
W 
7 13,0 
33 29,0 
51,65 
Therm. 
vv 
8 44,0 
34 4*5 
52.39 
Int. 58° 
Ext. 54 0 
52,44 
10 
E 
2 47,4 
33 54*3 
1 * 9*99 
52,14 
+ * 3 8 * 
E 
0 42,4 
33 43 * 8 
52,10 
E 
0 41,6 
33 42.8 
5**13 
+ ,0 IP 
In. 
W 
5 50,6 
33 4*3 
52,18 
Bar, 30,01 
W 
7 39*6 
33 39*4 
52,03 
Therm . 
w 
10 47,1 
35 **° 
50,81 
Int. 6i°| 
Ext. 55°i 
5**73 
1 1 
w 
6 11,4 
33 >2,0 
1 19,51 
53*46 
+ *39 x 
w 
5 1*4 
32 53*3 
53.56 
w 
3 z 3>4 
32 33*2 
53*21 
+ ,o6/> 
In. 
E 
3 13*6 
34 0,7 
54*34 
Bar. 29,87 
E 
4 34 *i 
34 I 4 »i 
52,71 
Therm. 
E 
6 21,6 
34 42*7 
53**8 
Int. 62° 
Ext. 58° 
53 * 4 * 
1 7 
E 
8 14,4 
35 * 9*8 
1 20,29 
51.91 
+ > 39 - r 
E 
7 i6 *4 
34 5 8 >7 
52,36 
E 
5 34*4 
34 26,4 
5**44 
+ ,02 p 
In. 
W 
0 12,6 
32 14,0 
5 ** 5 * 
Bar. 29,61 
W 
2 1,6 
32 20,3 
5**99 
Therm. 
w 
3 28,1 
32 3**3 
51,61 
Int. 53 0 
— — 
Ext. 44 0 
51,80 
Dec. 19 
E 
5 18,2 
34 25.0 
1 22,42 
53.67 
— ,00 ,r 
E 
4 5*2 
34 8 *3 
53*39 
E 
3 7*2 
33 58.3 
53 . 4 o 
— *3 9P 
In. 
W 
3 27,8 
32 35 >° 
55**7 
Bar. 29,94 
W 
4 52,8 
32 5**3 
54,49 
Therm. 
w 
5 53*8 
33 3*8 
51*24 
Int. 460 
— - 
Ext. 44° 
53,56 
28 
E 
8 45*4 
35 3 6 *2 
1 23,78 
55,89 
— ,06 X 
E 
2 25,4 
33 53*8 
55.20 
E 
0 36,4 
33 44*5 
53,81 
—>39P 
In. 
W 
4 57*6 
32 52,3 
55*12 
Bar. 29,72 
w 
6 49,6 
33 23,6 
54 , 8 * 
Therm. 
w 
8 27,6 
33 59*2 
54*55 
Int. 350 
Ext. 33 0 
ll 
54,90 
To show the consistency of the several observations of 
each day, they have been reduced, which otherwise would 
have been unnecessary, by applying the correction for 
collimation to each reading off. These corrections are 
for the bottom microscope, which was only used for 
a Aquarii. They were as follow : 
1 8 1 8. Sept, z, 4 
Dec. 16, 28 
1819. Aug. 17 — Sept. 
Dec. 3,28 
1820. Sept. 1 ,17 
Dec. 19, 28 
/ 
41,39"! —face East. 
44**5 I 
41,70 1 + face West. 
42,61 r 
43>96 J 
44,16 J 
Corrections of collimation for y and (3 Aquilie for mean 
of three microscopes. 
y Aquilae. 
n 
1818. July 14 — Aug. 16 
54 , 8 * 1 
Oct. 16 — Nov. 14 
47 . 9 ° 
Nov. 20 — Nov. 24 
4 *. *2 
Dec. 7, 9 
43*43 y 
1819. Aug. 2 — Sept. 7 
47,04 f 
Nov. 16, 29 
47,25 
1820. July 13, 25 
48,20 | 
Oct. 29 — Nov. 21 
4 8,40j 
/3 Aquilae. 
// 
1818. July 17 — Aug. 16 
55*241 
Oct. 16 — Nov. 14 
48,22 I 
Nov. 20 — Nov. 24 
4**34 1 
1819. Aug. 2 — Sept. 7 
47,10 y 
Nov. 16, 26 
47*51 
1820. July 13, 25 
48,53 
Oct. 29 — Nov. 21 
48,28 
— face East. 
4- face West. 
— face East, 
-fface West. 
