ute
crater on the outer slope of the S. wall. The former is a test object.

MILICHIUS.--Is situated on the N.N.E. of Hortensius. It is fully as
bright, but rather smaller. Its floor, apparently devoid of detail, is
considerably depressed below the surrounding surface.

TOBIAS MAYER.--Like Gay-Lussac, a noteworthy ring-plain associated with
the Carpathian Mountains. It is 22 miles in diameter, and has a wall
which rises on the W. to a height of nearly 10,000 feet above the floor;
on the latter there is a conspicuous central mountain, and on the E. side
a crater, and some little hills. Schmidt shows a smaller crater on the W.
side, which I have not seen. Adjoining the formation on the W. is a ring-
plain of about one-fourth its area, which is a bright object. Tobias
Mayer and the neighbouring Carpathians form an especially beautiful
telescopic picture at sunrise.

KUNOWSKY.--An inconspicuous ring-plain, about 11 miles in diameter,
standing in a barren region in the Mare Procellarum, W.S.W. of Encke. The
central mountain is tolerably distinct.

ENCKE.--A regular ring-plain, 20 miles in diameter, with a comparatively
low border, nowhere rising more than 1800 feet above the interior, which
is depressed some 1000 feet below the surrounding Oceanus Procellarum. A
lofty ridge traverses the floor from S. to N., bifurcating before it
reaches the N. wall. There is a bright crater on the W. wall, and a
depression on the opposite wall, neither of which, strange to say, is
shown on the maps. Encke is encircled by ridges, which, when it is on the
morning terminator, combine to make it resemble a large crater surrounded
by a vast mountain ring.

KEPLER.--One of the most brilliant objects in the second quadrant,--a
ring-plain about 22 miles in diameter, with a lofty border; a peak on the
E. attaining an altitude of 10,000 feet above the surface. The wall is
much terraced, especially the outer slope on the W., where a narrow
valley is easily traceable. Though omitted from the maps, there is a
prominent circular depression on the W. border, which forms a distinct
notch thereon at sunrise. On the N., the wall exhibits a conspicuous
gap. There is a central hill on the floor. Immediately E. of Kepler is a
bright plateau, bounded on the N. by a very straight border, with two
small craters on its edge. Both these objects are incomplete on the N.,
as if they had been deformed by a "fault," which has apparently affected
the N. end of Kepler