1(5 
GEOGRAPHIC TABLES AND FORMULAS. 
[BULL. 214. 
TABLES. 
Table 1. — Local mean {astronomical) time of the culminations and elongations of 
Polaris in the year 1902. 
[From Magnetic Declination Tables, U. S. Coast and Geodetic Survey. Computed for latitude 40° 
north and longitude 90° or 6 h west of Greenwich.] 
Date. 
East elonga- 
tion. 
Upper culmi- 
nation. 
West elonga- 
tion. . 
Lower culmi- 
nation. 
1902 
h in 
). m 
h in 
h 
m 
January 1 
45.8 
6 40. 6 
5 45. 3 
12 35.3 
11 40.0 
18 
17 
38.7 
43.4 
January 15 
23 46. 6 
February 1 22 39. 5 
4 38.2 
10 32.9 
16 
36.3 
February 15 
21 44. 2 
3 42.9 
9 37.7 
15 
41.0 
March 1 
20 49.0 
2 47.7 
8 42.4 
14 
45. 8 
March 15 
19 54.0 
1 52.7 
7 47. 3 
13 
50.7 
April 1 
April 15 
18 47.0 
17 52. 
45. 6 
6 40. 3 
5 45. 3 
12 
11 
43.7 
48. 6 
23 46.7 
May 1 
16 49. 1 
22 43. 8 
4 42.5 
10 
45.7 
May 15..., 
15 54.2 
21 48. 9 
3 47. 6 
9 
50.8 
June 1 
14 47.5 
20 42.3 
2 40.9 
8 
44.2 
13 52. 6 
12 50.0 
11 55. 1 
19 47. 4 
18 44.8 
17 49. 9 
1 46. 
43.4 
7 
6 
5 
49. 3 
46.7 
51.8 
July 1 
July 15 
23 44.6 
August 1 
10 48. 6 
16 43.4 
22 38. 
4 
45.3 
August 15 
9 53.7 
15 48. 5 
21 43. 1 
3 
50.4 
September 1 
8 47. 1 
14 41. 9 
20 36.5 
2 
43.8 
September 15 
7 52. 2 
13 47. 
19 41. 6 
1 
48.9 
October 1 
October 15 
6 49.3 
5 54.3 
12 44. 1 
11 49. 1 
18 38.7 
17 43. 7 

46. 
'?3 
47.2 
November 1 
4 47.5 
10 42. 3 
16 36.9 
22 
40.4 
November 15 
3 52.3 
2 49.3 
9 47. 1 
8 44.1 
15 41.8 
14 38. 8 
21 
20 
45.2 
42.2 
December 1 
December 15 
1 54. 
7 48. 8 
13 43. 6 
19 
46.9 
A. To refer the above tabular que 
mtities to y 
ears subseq 
tent in 190% 
For year 1903 add l.4miriu1 
,es. 
ladd 2.8 
1904 , , . - , 
[subtract 1.1 " 
up to Mar 
ch 1 
on and afl 
er March 1 
1905 add 0.2 
1906 " 1.5 
1907 ' ; 2.9 
14.2 " 
1908 « [ 03 „ 
up to Mar 
on and af 
ch 1 
er March 1 
1909 " 1.7 
1910 " 
3.0 
