rkable
obscure ring with a low border, a valley running round it on the W. side,
and two large central mounds, may be easily traced. This object is
connected with Madler by what appears to be under a higher sun a bright
elbow-shaped marking, in connection with which I have often suspected a
delicate cleft. Between the obtuse-angled bend of this object and the W.
wall of Madler, two large circular dark spots may be seen under a high
sun; and on the surface of the Mare N. of it, a great number of delicate
white spots.

BEAUMONT.--A ring-plain about 30 miles in diameter, on the S.E. side of
the Mare Nectaris, midway between Theophilus and Fracastorius, with the
N.E. side of which it is connected by a chain of large depressions. Its
border is lofty, regular, and continuous on the S. and E., but on the W.
it is low, and on the N. sinks to such a very inconsiderable height that
it is often scarcely traceable. It exhibits two breaks on the S.W.,
through one of which passes a coarse valley that ultimately runs on the
E. side of the depressions just referred to. The interior is pitted with
many craters, one on the W. side being shallow but of considerable size.
I once counted twenty with a 4 inch Cooke achromatic, and Dr. Sheldon of
Macclesfield subsequently noted many more. A ridge, prominent under
oblique light, follows a winding course from the N.W. side of Beaumont to
the W. side of Theophilus, and there is another lower ridge E. of it.
Between them is included a region covered with minute hillocks and
asperities. Among these objects are certain dusky little crater-cones,
which Dr. Klein of Cologne regards as true analogues of some terrestrial
volcanoes. They are very similar in character to those, already alluded
to, in the dusky area between Copernicus and Gambart.

KANT.--A conspicuous ring-plain, 23 miles in diameter, situated in a
mountainous district E. of Theophilus, with lofty terraced walls and a
bright central peak. Adjoining it on the W. is a mountain mass,
projecting from the coast-line of the Mare, on which there is a peak
rising to more than 14,000 feet above the surface.

FRACASTORIUS.--This great bay or inflexion at the extreme S. end of the
Mare Nectaris, about 60 miles in diameter, is one of the largest and most
suggestive examples of a partially destroyed formation to be found on the
visible surface. The W. section of the rampart is practically complete
and unbroken, rising at one peak to a height of 600