The time of egress may be found for any place in the United States by means of the following tables:

Egress of Mercury for Particular Places in Mean Time of Place.

OCCULTATIONS.

Elements for facilitating the calculation of Occultations which may be visible in the United States, in 1848.

4.5 7 38 13 A. 7 9 21.35 16 48 27 2 N. 54 14 S. 90 N.33 N. 4.5 3 39 53 M. 15 35 34.65 15 10 59.8 S. 16 14 43 N.17 S.

411 0 43 A.11 20 8.01 3 41 25.5 N. 8 49 S. 43 N.25 S. 5.6 6 59 4 15 51 50.62 16 4 48.2 S. 35 50

69 3 N.

6 7 1 15

19 19 17.66 18 39 24.8 63 56

71

40

Day of the Month.

Star's
Name.

Magnitude.

At the time of Conjunction.

Washington
Observatory,
Mean Time of
ap. conj. in R.
A. of Moon

and Star.

h. m. s.

Limiting
Parallels

h. m. 8.

"

48 36 34 A. 14 4 49.25 9 33 53.6 S. 27 24 S. 64 N. 6 S.

Aug. 5. m 7 ท

4.5 6 52 1

15 35 34.22 15 10 58.0
5 10 53 46 16 32 49.95 17 26 26.9
5 0 37 3 M. 19 12 54.18 18 7 23.2
5.6 4 54 34 A. 21 38 23.96 12 3 29.8
1 22 15.94 5 21 44.0 N. 30 52
4 19 47.30 16 0 51.5

37 36

73 5 N.

36 53

27 23

35 44

19 14

210, 8

511 22 33

21428

5.6 11 24 51

5 6 27 6 A. 19 12 53.42 18 7 24.3 S. 28 57 S. 53 N. 4 S.

23 40 10.76 3 36 1.4 68 51

86

37 N.

6 4 2 54 A. 22 54 41.45 7 22 53.2 S. 53 10 S. 83 N.19 N.

ECLIPSES OF THE SATELLITES OF JUPITER IN 1848. Visible in the United States, Mean Time at Washington Observatory.

A Table showing the Illuminated Portions of the Discs of Venus and Mars.

The numbers in this table are the versed sines of that portion of the Discs, which to an observer on the Earth, will appear to be illuminated, the apparent diameter of the planet at the time being considered as unity.

To a spectator on the Earth, Venus appears most brilliant when her elongation is about 45°, and she is approaching her inferior conjunction, or receding from it; in which positions she will not be this year. Mars is