inches.
Dec. 5 29.95 65.3 329 56 59.6 59 % 59 60.5 59 6.5

6 30.03 66.2 59 2.7 59 5.9 59 2.3 59 3.4
15 30.20 62 59 5.0 59 15.0 159 10.7 59 5.5
16 30.21 66.5 58 58.5 59 4.2 59 5.0 58 58.0
18 29.93 72.5 58 45.0 58 48.7 58 46.0 (58 43.0

9

...

Jinches.
Nov. 19 29.62 65.3 30 43 "4 439 43 18 43 13

25 30.02 75.7 43 3.7 43 6 15.7 43 9.7
Dec. 129.86 81.9 43 5.0 43 1.8 10.0 43 14.0

7 29.99 83.7 43 1.6 43 0.0 10.8 43 5.9
829.80 93.8 42 56.0 43 0.8 10.3 43 8.1
12 29.60 83.3 42 57.0 42 58.4 8.3 43 2
16 30.23 76.5 43 0.0 43 1.1 10.4 43 18
18 29.86 91 42 57.7 42 59.5 8.3 42 59.5
21 29.81 73.5 42 53.0 42 58.0 1.5 43 9.5
27 30.12 70.6 42 51.5 42 55.5 7.4 43 5.0
28 30.08 72.5

42 53.0 42 57.0 10.0 43 8.1
Dec. 111... Mean .. 30 42 58.9 43 0.6 43 10.0 43 8.1
Refract, and Reduct. -40.5 40.6 40.5 40.6

Dec. 10... Mean 329 58 58.2 59 7.2 59 0.4 58 58.1
Refract, and Reduct. -12 4.4 12 4.4 12 4.4 12 4.4

329 46 53.8 47 2.8 46 56.0 46 53.7

Superior Culminat. 30 42 18.4 42 20.0 42 29.5 42 27.5
Inferior Culminat... 329 46 53.8 47 2.8 46 56.0 46 53.7

Mean Inside Temperature 710.7.
Half Diff. S. P. D. 30 27 42.3 27 38.6 27 46.7 27 46.9 Mean of 4 Microscopes............30° 27' 435.64 by 16 Observ.

Mean S. P. D. of ß Centauri, Jan. 1, 1828 ..30° 27' 37".7 by 29 Observ.

99

» 26.7

Jinches.

inches.
May 21 29.96 53 si 14 37.4 14 27.5 14 57.0 14 62.5 May 24 29.78 30 329 ó 6.5 59 51.0 ó 27.0 ó 17.0

/

ó 69
22 29.76 / 62 31 14 35.0 14 13.5 14 53.2 14 52.0 26 29.84

44 329 0 19.0 59 58.2 36.2 17.7
28 30.04

44 329 0 15.0 0 1.3 35.0
May 211.5... Mean... 31 14 36.2 14 20.5 14 55.1 14 52.2

30 29.63 51 328 59 58.7 59 47.8 13.4 7.0
Refract. + Reduct. -1 50.4 1 50.4 1 50.4 1 50.4

329 0 10.5 59 54.6 0 28.0 0 12.3
Superior Culminat. 31 13 11.7 13 11.8 13 12.4 13 18.8 May 27.... Mean
Inferior Culminat... 328 46 22.4 46 6.5 46 39.9 46 24.2

Refract. and Reduct. -13 48.1 | 13 48.1 13 48.1 13 48.1

328 46 22.4 46 6.5 | 46 39.9 | 46 24.2
Half Diff, S. P, D. 31 13 11.7 13 11.8 13 12.4 13 18.8

31 26 4.7 26 10.8 26 á 26 "6.4 June 12 30.05 29 329 16 36.0 16 40.5 16 42

16 31.3

17.1
11.4
9.8

12.2
13.5
11.5

24
24.4
17.0

16.4
18.2
12.1

8.0 15 59.0
26 16 14.0

19 30.34

June 16/... Mean ... 329 16 17.0 | 16 26.2 16 25.4 | 16 14.8
Refract, and Reduct. - 16 9.5 16 9.5 | 16 9.5 16 9.5

June 11.5...Mean... 31 26 11.0 26 12.0 26 21.6 26 13.0
Refract, and Reduct.

+4.5 4.5 4.5 4.5
Superior Culminat. 31 26 15.5 26 16.5 26 26.1 26 17.5
Inferior Culminat... 3290 7.5 0 16.7 0 15.9 0 5.3

Mean Inside Temperature 45°.
Mean of 4 Microscopes............31° 13' 3".8 by 7 Observ.

31° 13' 18".7 by 13 Observ.

Mean S. P. D. of n Argus, Jan. 1, 1828

.

11

69 13 1.6

2.7

3.7 5.0

ܕܕ ܕܕ

7.5

5.5

99

99

inches. Oct. 30 29.79 77

31 29.53 88 Nov. 1 29.66 76.5

2 29.75 80 3 30.50 68 6 29.62 75 729.78 65.5 9 30.10 68.3 12 30.10 178 14 29.98 90 27 30.16 78

28 30.08 78 Dec. 12 29,56 75.5

13 29.52 78.2 14 29.60 74.5

inches. 13 16.8.13 9.8 Nov. 3 29.72 68.3 & 53 6.0 13 13 | 52 53.7

19.5 11.0 10 30.07 53.5 53 49.7 54 21.0 54 4.4 53 45.0 22.0 11.2 13 30.00 | 64 53 23.5 53 50 53 26.4 53 16.1 15.0 9.5

19) 30.06 63.8 53 11.5 53 55.5 53 25.1 53 3.7 22.0 9.0

27 30.19 | 64.5 53 27.8 54 2.3 53 41.3 53 21.0 20.5 7.8 28/ 30.09 67.8 53 0.5 53 37.2 53 16.7 53 8.0 21.2

29 30.03 67.0 52 57.7 53 39.0 53 12.4 53 1.0 21.8 11.0

Nov. 181... Mean 6 53 15.8 53 54.2 53 28.5 53 12.9 21.6 5.0

Refract, and Reduct. -12 47.6 12 47.6 12 47.6 12 47.6 23.6 9.9 24.8 10.7

6 40 28.241 6.6 40 40.9 40 25.3 19.3 7.7 28.8

18.7 26.3 13.8 25.8 15.3 24.8 49.5

2.2 13 44.5

42.0 5.9 46.8

55.0 7.1 46.5 2.0 47.0 1.0 44.0 6.0 30.7 2.7 30.0 3.0 31.6 0.5 42.0

99

9

9

16 29.62 64

99

inches.

inches. Oct. 630.16 86 : 29 62 29 59.5 30 "0.0 29 54.5 Oct. 630.04 18.5 329 14 19.2 14 37.5 14 2.0 14 24.0 7 30.15 75 29 53 29 56.0 29 59.0 56.5 24 30.16 53

14 9.0 14 22.0 14 12,0 14 13.0 8 29.68 80.5 29 51.2 29 57.3 29 53.4 55.0 27 29.78 61 13 44.0 13 58.0 13 49.0 13 49.0 16 29.93 66.6 29 50.0 29 58.3 | 29 57.0 53 Nov. 3 29.85 52 13 52.0 | 14 6.0 13 58.2 13 56.0 2029.75 82.2 29 51.2 29 52.0 29 51.7 55

4 29.90 59 13 49.5 14 1.3 13 54.7 | 13 47.0 21 29.80 62.8 29 45.0 29 47.0 29 49.3 47.0 13 29.60 59 13 45.4 14 0.2 13 55.0 13 46.5 25 29.82 68 29 53.3 29 58.4 29 58.3 57.0 15 29.55 63 13 26.0 13 45.0 13 33.0 13 28.0 27 29.85 73,5 29 55.0 29 58.0 30 1.0 55

17 29.50 66 13 21.0 13 33.0 13 27.0 13 24.4 Nov, 1 29.58 73 29 57.3 29 57.6 30 1.7 55.5 20 29.50 70 13 51.5 13 59.0 13 54.4 13 53.0

2 29.70 66 30 1.2 30 5.0 30 1.0 56.3 26 29.85 80 12 49.0 13 1.0 12 53.0 12 51.0 3 29.94 68.7 29 56.0 29 59.5 30 0.2 53.0 27 29.90 67 13 23.7 13 33.0 13 26.0 13 25.6 7 29.84 77 29 50.0 29 54.0 29 52.0 51.0

Nov. 8... Mean ... 329 13 41.0 13 54.2 13 40.7 13 43.4 11 29.55 73.5 29 55.0 29 57.1 30 0.7 55.3

Refract. Reduct. - 14 38.4 14 38.4 14 38.4 14 38.4 12 29.57 75 30 0.0 29 56.5 29 59 59.5 17 29.63 | 67.5 29 54.5 29 55.5 30

328 59 2.6 59 15.8 59 2.3 59 5.0

1.0 58.0 27 30.00 79 29 51.4 (30 3.8 29 53.8 53.5 Dec. 1330.10 75 29 57.7 30 1.6 30 5.5 59.3

14 29.95 72 29 53.6 30 54.3 30 51.0 51.3 15 29.83 84 29 52.0 30 56.7 30 55.5 54.0

99

inches.

May 2 30.0984 il 51 62.7 52 47.2 51 55 61 36.7 May 9 (29.86 60.5 328 24 40.5 26 "1.3 24 56.3 24 365

inches.

inches.
May 21 29.91 5% :1 51 52.5 51 26 52 "7.1 52 “14 May 21 29.98 50 328 25 20.2 14 61 25 35.6 és zob
25 29.68 55
56.0 26.2 11.0 0.0 29 29.9347

20.0 57.0 39,5 15.4
28/ 30.03 52
53.7 8.0 15.7 6.0 30/29.71

27.2 47.5 35.0 19.8
June 2 29.87 | 57
52.7 13.0 37.0 3.0 June 2 29.92 50

15.0

27.7 16.2

99

48

99

31 51 53.7 51 18.3 52 17.7 52 2.6 May 28... Mean ... 328 25 20.6 24 51.4 25 34.4 25 18
+59.7

59.7 59.7 59.7 Refract, and Reduct. - 18 50.4 18 50.4 18 50.4 18 50.4

inches.
31 61 56 61 52.7 62 "9.8 52 17.0 June 1 29.70 63

29.7083 328 24 38 24 22.0 44 66 % 315

24 32.5
51 57.0 52 0.0 16.8 52 4.0

4 29.99 46 25 28 25 34.0 25 33.7 25 17.6
51 58 51 58 25.0 52 7.0

9 29.92 47.5 » 25 11.5 25 0.8 25 25.2 25 12.2
52 0.5 51 58.5 23.3 52 13.0 14 29.95 47.5 25 9.0 24 53.4 25 21.5 25 8.5
52 1.5 51 53.0 26.0 52 10.0 20 30.00 36,5 25 43.6 25 48.0 25 58.4 25 36.3
52 0.5 51 51.0 26.0 51 59.0 21 30.00 42.5 25 34.7 25 18.5 25 47.6 25 27.7
52 3.7 51 54.8 23.8 52 11.7

June 11... Mean 328 25 17.5 25 9.5 25 29.4 25 12.5
52 4.0 51 51.5 24.3 52 12.0

Refract. and Reduct. - 18 57.5 18 57.5 18 57.5 18 57.5
52 5.8 51 53.7 26.3 52 9.3
52 9.0 51 54.5 31.4 52 12.0

328 6 20.0 6 12.0 6 31.9 6 15.0
52 14.0 51 2.7 32.0 52 20.7
52 :2.8 51 9.0 38.4 52 16.8
52 11.0 51 59.2 34.0 52 19.0

99

99

32 - 17.56 26
13.5

21.3
19.8

21.0
6.3 10.5
3.0 7
2.7
0.0 1.2
3.4 14.0
7.0 12.0

» 27.3
» 32.7
» 25.3

Jinches.
Feb. 21 30.05 84

25 29.89 96

27 29.83 186
Mar. 3 29.85 73

10 29.51 93.3
11 29.76 80
13 29.90 82.7
19 29.74 95.5

30 29.94 73
Apr. 1|29.67 176

99

inches.
1 39.4 34 Feb. 21 30.02 38.5 328 31 54 31 59 38 45 31 55.7

3759
28.0 22.8
25 30.02 61

37 44 45 37 49.0 37 47.0
23.4 || Mar. 6 29.62 57 37 15.8 24.5 37 31.0 37 14.0
22.0 31 29.65 66.5 36 51.2 0.0 37 1.2 36 54.7
6.6

Mar. 5... Mean 328 37 26.2 37 32.1 37 36.4 37 27.8
19.5 8.0

Refract, and Reduct. - 16 58.2 16 58.2 16 58.2 | 16 58.2
21.1 10.0
14.3 3.0

328 20 28.0 20 33.9 | 20 38.2 20 29.6
23.5 11.4

12.1

99

99

99

99

» 13.1

99

99

99