of Fontinelle, extending towards Goldschmidt and the limb, Schroter discovered a very wide irregular valley which he named “J.J.  Cassini.”  It is really nothing more than a great plain bounded by ridges.  At 9 h.  October 15, 1888, when Philolaus was on the morning terminator, I had a fine view of it, and, as regards its general shape, found that it agreed very closely with Schroter’s drawing.

EPIGENES.—­A remarkable ring-plain, about 26 miles in diameter, abutting on a mountain ridge running parallel to the E. flank of W.C.  Bond.  It is a notable object under a low morning sun.  There are several elevations on the floor.

GOLDSCHMIDT.—­A great abnormally-shaped enclosure with lofty walls between Epigenes and the limb.  Neison mentions only two crater-pits within.  I have seen the rimmed crater shown by Schmidt on the W. side and three or four other objects of a doubtful kind.

ANAXAGORAS.—­A brilliant ring-plain of regular form, 32 miles in diameter, adjoining Goldschmidt on the E. It is a prominent centre of light streaks, some of which traverse the interior of Goldschmidt.  On the north a peak rises to the height of 10,000 feet.  There is a long ridge on the floor, running from E. to W.

GIOJA.—­A ring-plain about 26 miles in diameter, near the north pole.

EAST LONGITUDE 20 deg.  TO 40 deg.

REINHOLD.—­A prominent ring-plain, 31 miles in diameter, with a lofty border, rising at a peak on the W. to more than 9000 feet above the floor.  Its shape on the W. is clearly polygonal, the wall consisting of three rectilineal sections, and on the E. it is made up of two straight sections connected by a curved section.  The inner slope includes a remarkably distinct and regular terrace, the E. portion of which is well seen when the interior is about half illuminated by the rising sun.  At this phase also the great extent of the glacis on the S.W., and the deep wide gullies traversing it on the E. are observed to the best advantage.  The central mountain, though of considerable size, is not prominent.  Close to Reinhold on the N.W. stands a noteworthy little formation with a low and partially lineal wall, exhibiting a gap on the north.  There is a distinct crater on the S. side of its floor.

GAY-LUSSAC.—­A very interesting ring-plain, 15 miles in diameter, situated in the midst of the Carpathian Highlands N. of Copernicus, with a smaller but brighter and deeper formation (Gay-Lussac A) on the S.W. of it, and a conspicuous little crater, not more than 2 or 3 miles in diameter, between the two.  The interior of Gay-Lussac is traversed by two coarse clefts, lying nearly in a meridional direction.  The more easterly runs from the foot of the S. wall, near the little crater just mentioned, across the floor to the low N. border, which it apparently cuts through, and extends for some distance beyond, terminating in a great oval expansion.  The other, which is not shown in the maps, is closely parallel to it,