70 
THE YOUNG SCIENTIST. 
Eastern Continent, except the southern point 
of Africa. The line of totality passes through 
Shanghai and IS ankiug in China, Bagdad and 
Alcaba, and terminating near the west coast of 
Africa in 11° north lat. It is stated that Prof. 
Swift, of Kochester, N. Y., will be in Arabia to 
make search for the intra mercurial planets 
which he believes he has seen. Certainly if he 
does not meet with success in the pure dry 
atmosphere of Northern Arabia, further effort 
in that direction would seem useless. 
APPEAEANCE OF THE HEAVENS AT 9 P.M., MAY 
20, 1882. 
Looking southward the beautiful star Spica 
Virginis is very near the meridian and only 3° 
south or below the earth's path (Sun's apparent 
path). To the left of this star is the quad- 
rilateral in Libra. Arcturus is about an hour 
east of the meridian and the large cluster of 
small stars called Berenice's Hair is almost over- 
head. The Sickle and Kegulus in Leo are 
nearly half way to the western horizon, and 
still west of them is Mars in Cancer. Procyou is 
near setting. Castor and Pollux are higher up 
and further north, and Venus is west of them a 
few degrees. 
In the east, Altair in the Eagle has just risen 
in the N.E,, and Scorpio and Antares in the 
S.E. 
Looking northward, the Great Dipper in Ursa 
Major is just north of our zenith; the head of 
Draco is to the right of Polaris, and Cassipeia's 
Chair below and close to the northern horizon. 
Algenib in the bright cluster in Perseus is just 
west of the lower meridian and near the 
horizon. 
EPHEIMEEIDES OF THE PKINCIPAL STAES AND 
CLUSTEES, MAT 21, 1882. 
H, M. 
Alpha AndromedEe (Alpheratz) 
rises 0 8 morn 
Omicron Ceti(Mira) variable, rises 4 26 " 
Beta Persei (Algol) variable, rises 1 52 " 
Eta Tauri (Alcyone or Light of 
Pleiades) rises 4 12 " 
Alpha Tauri (Aldebaran) invisible 
Alpha Aurigae (Capella) sets 11 14 even 
Beta Orionis (Rigel) invisible 
Alpha Orionis (Betelguese) sets 8 12 " 
Alpha Canis Ma j oris (Sirius or 
Dog Star) invisible 
Alpha Canis Minoris (Procyon) 
sets 9 49 " 
Alpha Leonis (Eegulus) sets 0 47 morn 
Alpha Virginis (Spica) in merid. 9 16 even 
Alpha Bootis (Arcturus) " " 10 7 " 
AZp/iaScorpionis (Antares)" " 0 23 morn 
^Zp;iaLyrae(Vega) " " 2 33 " 
H, M. 
Alpha Aquillae (Altair) rises 9 13 ever. 
Alpha Cygni (Deneb) in merid. 4 37 moro 
Alpha Pisces Australia (Eormal- 
haut) rises 2 52 " 
THE MOON, THIED QUADEANT, CONCLUDED. 
Very near the southern iimb of the Moon lies 
the deepest of the Lunar Craters— Newton (256), 
This is exceedingly irregular in outline, being 
about 142 miles long and 70 broad. Several 
lolty towers surmount the wall, the highest o} 
which is 24,000 feet above the interior. There is 
only one sinall crater between this and the 
Moon's lower limb, where a series of colossal 
mountains stand out in bold relief, and are 
bathed in perpetual sunlight. The Moon's axis 
is inclined only about 1J° to her orbit, hence 
such mountains as are on or near the Arctic or 
Antarctic circle, as we apply those terms to the 
earth, are never in darkness. On each side oi 
the South Pole and extending into both the 3d 
and 4th quadrants lie lofty peaks that project 
beyond tli(; limb and break its continuity. 
Several of these measure nearly 30,000 feet, and 
one author announces 36,000 feet as the height 
of one. When the Moon is reduced to a delicate 
crescent near the new, these mountains prolong 
the horn. Just to the left and above Newton is 
an attractive crater (260) 51 miles in diameter 
and bearing a peak 18,000 feet above the interior, 
Almost touching the last is another, larger, and 
steeper, and from its flat interior ten craterlets 
lift their heads. 
In.a direct line with the last two named craters 
and separated from 260 by its own diameter 
only, is another (265) very deep crater with a 
towering peak 20,000 feet high. Almost touching 
265 upon the west is an interesting ring 78 miles 
broad and of very unequal height. It is 15,000 
feet high on the west side and terraced within. 
This crater contains the highest central peak 
yet measured— 6,800 feet. When the Sun rises 
or sets upon its peak it may be seen as a golden 
spot in the dark shadow of the surrounding 
wall. Look for it about one day after first 
quarter. 
The numbering now carries us over to the East 
limb, where the naked eye detects a long black 
spot; this (272) crater has a darker interior 
than any other of its size. It is 147 miles long 
and 129 wide. A trifle east and extending far 
south of this great black crater is a series of 
ranges 20,000 or more feet high. Some of these 
may be seen projecting from the eastern limb. 
About 15° south of these seems to be a continu- 
ation of the same range projecting from the 
Moon's limb also— these are called the Rook 
Mountains- 
