sunrise. On the N.W. there is another
bright crater, the largest of the row, running in a W.S.W. direction, and
forming a W. extension of the remarkable crater-chain tangential to the
borders of Almanon and Abulfeda. The only objects on the floor are three
little hills, in a line, near the centre, a winding ridge on the W. side
of it, and two or three other low elevations.

ABULFEDA.--A larger and more massive formation than Almanon, 39 miles in
diameter, the E. wall rising about 10,000 feet above the interior, which
is depressed more than 3000 feet. It is continuous on the W., but much
broken by transverse valleys on the S.E., and by little depressions on
the N. On the S.E. originates the very curious bright crater-row which
runs in a straight line to the N.W. wall of Almanon, crossing for the
first few miles the lofty table-land lying on the S.E. side of the
border. With the exception of a low central mountain, the interior of
Abulfeda contains no visible detail. The rampart is finely terraced on
the E. and W. The E. _glacis_ is very rugged.

ARGELANDER.--This conspicuous ring-plain, about 20 miles in diameter, is,
if we except two smaller inosculating rings on the S.W. flank of
Albategnius, the most northerly of a remarkable serpentine chain of seven
moderately-sized formations, extending for nearly 180 miles from the S.W.
of Parrot to the N. side of Blanchinus. Its border is lofty, slightly
terraced within, and includes a central peak.

AIRY.--About 22 miles in diameter, connected with Argelander by a
depression bounded by linear walls. Its border, double on the S.E., is
broken on the S. by a prominent crater, with a smaller companion on the
W. of it; and again on the N.E. by another not so conspicuous. It has a
central peak. The next link in the chain of ring-plains is Airy _c_, a
very irregular object, somewhat larger, and with, for the most part,
linear walls.

DONATI.--A ring-plain on the S. of Airy _c_, about 22 miles in greatest
length. It is very irregular in outline, with a lofty broken border,
especially on the N. and S., where there are wide gaps. There is another
ring on the S.E.

FAYE.--The direction of the chain swerves considerably towards the E. at
this formation, which resembles Donati both in size and in irregularity
of outline. The wall, where it is not broken, is slightly terraced. There
is a craterlet on the S. rim and a central crater in the interior.

DELAUNAY.--Adjoins Faye on the S.E.,