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BY THE TRIBUNE ASSOCIATION.

FOR CONTENTS AND INDEX SEE END OF VOLUME,

ASTRONOMICAL CALCULATIONS.

(Prepared by S. Hart Wright, M. D., A. M., Ph., Penn Yan, N. Y.) Five eclipses for 1902, as follows: I. Partial of the sun, April 8, of less than one di **: seen only in the Arctic Ocean. II. Total of the moon, April 22, seen in Asia, Europe and Africa,

HI. Partial of the sun, May 7, of about ten digits, seen in New-Zealand and in part of the Pacific Ocean.

IV. Total of the moon, October 16-17, visible generally in the United States.
V.
Partial of the sun, October 31, of eight digits, seen in Europe and Asia.

(Intercolonial. Eastern. Central, Lunar Eelipse, Oct. 16-17*

Mountain. Pacific. H. M.

H. M.

H. M. HH. M. H. M.

0 17 mo. 11 17 ev. 10 17 ev. Eelipse begins.

9 17 ev.

8 17 ev. Total begins.

1 19 mo.
0 19 mo. 11 19 ev.

10 19 ev. 9 19 ev. Middle.

2 3 mo.
1 3 mo. 0

3 mo.

3 ev.

10 2 48 mo.

1 48 mo. 048 mo, Total ends

11 48 ev.

10 48 ev. 3 50 mo.

2 50 mo.

1 50 mo. Partial' ends..

050 ev.

11 50 ev. *Evening Phases on 16th. Morning Phases on 17th.

ECLIPSE OF MOON OCTOBER 16-17.

3 ev.

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No. 1, first contact. No. 2, first six digits. No. 3, total and middle. No. 4. last six digits. No. 5. last contact. N is north point of the moon. No. 1 is 86* east; No. 5, 118° west of it.

Note-The line from the moon's centre to N points to the North Star always,

SUPERIOR PLANETS EAST

OR

WEST OF THE SUN.
Mars, until March 29...
East Mars, after March 29.

.West Jupiter, until Jan. 15. and after Aug. 5. East Jupiter, from Jan, 15 to Aug. 5...... West Saturn, until Jan. 9, and after July 17.East Saturn, from Jan. 9 to July 17... ... West Uranus, from June 10 to Dec. 14.....East | Uranus, until June 10 and after Dec. 14. West THE SEASONS.

MORNING AND EVENING STARS. D. H.M

Venus from Feb. 14 to Nov. 28 will be Winter begins 1901, Dec. 22 7 1 Mo. a morning star, and it will be an evening Spring begins 1902, March 21 8 Mo. star to Feb. 14 and after Nov. 28. Summer begins 1902, June 22 9 6 Mo. Mercury, evening star, from Jan, 2 to Autumn begins 1902. Sept. 23 6 40 Ev. Feb. 18; April 28 to June 23; Aug. 11 to Winter begins 1902, Dec. 22 1 19 Ev. Oct. 19, and after Dec. 12.

Mercury, morning star, Feb. 18 to April 28; June 23

to Aug. 11; Oct. 19 to Dec. 12.

PLANETS BRIGHTEST. Mercury, Feb. 1 to 3 and Sept. 25 to 30. after sunset: also March 11 to 15 and Nov. 4 to 7, rising before the sun. Venus, Jan, 5 ann March 21. Mars, not this year. Jupiter, Aug, 3. Saturn, July 17. Uranus, June 30. Neptune, Dec. 24. Jupiter will be in Capricornus after March 16. Saturr will be in Sagittarius all the year, and Uranus in Scorpio all the year.

ERAS,
The Mahometan year 1320 begins April 10
The Jewish year 5663 begins October 2.
The Japanese year 2562 is 1902 A. D.
The Olympian year 2678 begins in July, 1902.

NOTE.--The times of the lunar eclipse of October 16-17, the moon's phases and the tides for three ports are given in Standard Time, used by railroads, and for the tides the standard used at the ports is that for the 75th meridian. For all other computations in the Almanac true mean solar time is used. Standard time, being artificial, cannot be used for such without much confusion and some error, besides being very impracticable where solar time is needed.

/

31°

37°

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AZIMUTH TABLE OF POLARIS, OR NORTH STAR, 1902.

The surveyor may find the true north by observing Polaris either when it crosses the meridian or is at the greatest eastern or western elongation. The latter plan is preferable to the former, but it calls for a knowledge of the azimuth of the star, which is not uniform for all seasons, and latitudes. Hence the table given herewith. If one knows approximately the time when the elongation will be reached, he can follow the star with his transit until ii cease to muve further to the eastward (or westward). Then, by reading his compass and applying the correction for azimuth, he will get the variation of the needle. in case of doubt it may be wise to repeat the observation a night or two later.

The eastern elongation is the one to use froin early May to the middle of October, and the western will serve for all but a few w.uks of the remainder of the year. In 1902 Polaris will be at its eastern elongation on May 10, at about 4:17 a. m.; May 16, 3:54 a. m.; June 1, 2:51 a. in.; 16, 1:52 a. m.; July 1, 12 a. m.; July 16, 11:55 eve.; August 1, 10:5. p. m.; August 16, 9:54 p. n.; September 1, 8:51 p. m.; September 16, 7:52 p. m.; October 1, 6:53 p., m.; October 16, 5:50 p. m. The western elongation occurs on October 16, aabout 5:40 a. m.; November 1, 4:37 a. m.; November 16, 3:38 a. m.; December 1, 2:39 a. m.; December 16, 1:40 d. m.; January 1, 12:36 morn.; January 16, 11:36 eve.; February 1 20:39 p. m.; February 15, 9:34 p. m.; March 1, 8:43 p. m.; March 16, 7:41 v. m.; April 1, 6:40 p. m. The event occurs four minutes earlier each night than on the preceding one.

From the closing days of March until May 10 Polaris will be on the meridian, and
hence in the true north, when a plumb line will cover it and 38 Cassiopeæ simulta-
neously. The latter is a star of the sixth inagnitude, some 20 degrees distant from the
Pole Star. Delta Cassiopeæ, some 10 degrees further away, but brighter, is approxi-
mately in the same celestial longtitude, but 38 Cassiopeæ corresponds much more
precisely. It wili be direcily under Polaris on April 1, at about 12:47 a. m.; April 16,
11:49 p. m.; May 1, 10:49 p. m., and May 10, 10:14 p. m.
AZIMUTH OF POLARIS (NORTH STAR) FOR 1902, WHEN AT ITS GREATEST
ELONGATION, EAST OR WEST, FOR THE LATITUDE AND DATES GIVEN.

Polar
Dist. Lat. Lat.

Lat.

Lat. Lat, Lat. Lat. Lat. Lat. Month. of Po 29°

33° 35°

39° 41° 43° 45° laris.

"10 January

ī 11 12 34/1 22 57|1 24 4011 26 32 1 28 351 30 52|1 33 23/1 36 911 39 14/1 42 38 January 11 33 57 32 34 51 24

8 13 37
January
21 33 57

32
51 24

8 13 37 February 1 34 58 40 32 35 52

9 14 38 February 11 35 59 41 33

36 53 26

11

15 39 February

21 36 1 23 0 42 34 38 55 28 13 17 41 March

1
39

1
45 37 41

58 30

16 20 44 March

11
41

6

48 40 441 31 1 32 19 23
March

21
44
10 51 43 48

36 21 27 52 April

1
47 13 55 47 51

8 41 23

57
April
11 51 18

59
51

12 45 28 371 43 2
April
21 54 22 1 25 3 56/1 29 2 17 48 34 40

6
May
1 57 25

6 59
4 21 52 40

44
11 59 28

91 27 1

24
43

14
May
21 1 13 2 30

4
27 57 46

18 June 1 32 14

7

291 34 0 49 53 20
June
11

16
9 13 31

2 51 56 21
21
16 10 15 32

52 57 23 1 6 34) 17 10 15 32

52 57 23 July

11
6 34 17
10 15 32

52 57 23 July

21
3 54 16

9
13 31

49 56 21 August

1
3
31 14

6

10 29 1 33 59 48 52 19 August 11 2 29 11

8!

57 46 50 18 August 21 1 12 59 27

9
6 24 55

43 48
Septemb'r 11 56 23

6\1 26 57
3 20 51 38 43

8 Septemb'r

11
53 20
2 54

1
16 47 32 39

4 Septemb'r

50 16 1 24 58 511 28 55 11 44 27 36
October
1 46 12 53 47 50

7 40 22 31 1 42 55 October 11 42

8 49 42

45

2

33 20 24 49 October 21 39

4 44 37 4111 30 58 30 16 20 44 November 1 34|1 22 59 40 32 35 52 23

9

14 39 November 11 31 55 35 28 31 48 19

5 10 34 November 21 27 51 31 24 27 44 14

0

5 29 December 1 24 47 28 20 24 40 101 35 56

24 December 11 22 44 26 17 21 38

7 53 1 38 58 21 December 21 19 41

15 18 35

4 50 55 18 December |31|1 12 18 1 22 4011. 24 21 1 26 1311 28 16|1 30 32 1 33 2 1 35 48|1 38 5211 42 15

38 38

34

1

32

56

May

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