ECLIPSES OF THE SATELLITES OF JUPITER IN 1854,

Visible in the United States, Mean Time, Washington Observatory.

Position and Magnitude of the Rings of Saturn, according to Bessel and Struve, for every Fortieth Day in the Year, at 7 hours in the Morning.

a denotes the outer transverse axis of the outer ring.

"outer conjugate axis of the outer ring, positive when the northern surface is visible, negative when the southern.

p denotes the inclination of the northern semi-conjugate axes of the rings to the circle of declination; + when East,

when West.

"angle of elevation of the Earth above the plane of the rings,

as seen from Saturn; when North,

when South.

"angle of elevation of the Sun above the plane of the rings, as seen from Saturn; + when North,

when South.

The inner semi-transverse axis of the inner ring is two thirds of a, diminished by 0".07. The inner semi-conjugate axis of the inner ring is two thirds of b, diminished by 0".016.

The Opposition will take place on the 4th of December.

LATITUDE AND LONGITUDE OF THE PRINCIPAL PLACES IN THE UNITED STATES, ETC.,

WITH THEIR DISTANCES FROM WASHINGTON.

[The Longitudes are reckoned from Greenwich.]

The Capitals (Seats of Government) of the States and Territories are designated by Italic Letters.