THE HERACLIDES PROMONTORY.--The less lofty but still very imposing
headland at the E. end of the Sinus Iridum, rising more than 4000 feet
above it. It consists of a number of distinct mountains, forming a
triangular-shaped group running out to a point at the S.W. extremity of
the bay, and projecting considerably beyond the shore-line. There is a
considerable crater on the E. side of the headland, not visible till a
late stage of sunrise. It is among the mountains composing this
promontory that some ingenuity and imagination have been expended in
endeavouring to trace the lineaments of a female face, termed the "Moon-
maiden."

BIANCHINI.--A fine ring-plain, about 18 miles in diameter, on the N.E.
side of the Sinus Iridum, surrounded by the lofty mountains defining the
border of the bay. Its walls, which are prominently terraced within, rise
about 7000 feet on the E., and about 8000 feet on the W. above the floor,
which includes a prominent ridge and a conspicuous central mountain.
There is a distinct crater on the S. wall, not shown in the maps. Between
this side of the formation and the bay is a number of hills running
parallel to the shore-line: these, with the intervening valleys, will
repay examination at sunrise.

MAUPERTUIS.--A great mountain enclosure of irregular shape, about 20
miles in diameter, in the midst of the Sinus Iridum highlands, N. of
Laplace. The walls are much broken by passes, and the interior includes
many hills and ridges.

CONDAMINE.--A rhomboidal-shaped ring-plain, about 23 miles in diameter,
N. of Maupertuis, with lofty walls, especially on the E., where they rise
some 4000 feet above the interior. There are three large depressions on
the outer N.W. slope, and at least three minute craters on the crest of
the wall just above. Though neither Neison nor Schmidt draw any detail
thereon, there is a prominent ridge on the N. side of the floor, and a
low circular hill on the S. On the S.E. four long ridges or spurs radiate
from the wall, and on the N.E. are three remarkable square-shaped
enclosures. On the edge of the Mare Frigoris, N.W. of Condamine, are many
little craters with bright rims and a distinct short cleft, running
parallel to the coast-line. The winding valleys in the region bordering
the Sinus Iridum, and other curious details, render this portion of the
moon's surface almost unique.

BOUGUER.--A bright regular little ring-plain, about 8 miles in diameter,
N. of Bianchini.

J.F.