28 
THE YOUNa SCIENTIST. 
JUPITER. 
As it takes Jupiter an entire year to move 
over one sign, or 30", his position, witli respect 
to the stars, changes very slightiy from month 
to month. He sets as follows : 10th, 11.^ even. ; 
20th, 10.37 even., and 30th, 10.7 even. He'passes 
1^ south of the crescent Moon on the 23d. 
FAVOKABIiE TIMES FOR OBSERVING THE PHE- 
NOMENA OF JUPITER'S SATELLITES. 
(For an inverting telescope at 8h. 42m. even., 
New York City Time.) 
On the 2d all will be upon the east, I., II., and 
III. close together, and IV. very distant. Again, 
upon the 16th none will be visible upon the west, 
and only II. and IV. upon the east, the others 
"being in the planet's shadow or in eclipse. And 
again, on the 31st, all will be upon the east, 
only II., III., and IV. being visible, the last be- 
ing very close to the planet. I. is in transit, 
which began at 8.19 p.m. On the 9th and 26th 
IV. may be seen at greatest distance west, and 
on the 1st and 18th greatest distance east. On 
the 7th, 8th, and 28th all will be upon the west 
side. On the 27th, at the above time I., 11., and 
TV. may be seen at very nearly their true rela- 
tive distances from the planet, and were III. as 
far again to the west it would be in the proper 
place. 
Tlie following are the visible eclipses of Ju- 
piter's satellites which occur this month : 
D. H. M. 
I.— 2 6 36 even. Reappearance, E. 
I.— 9 8 32 " 
II.— 12 6 53 " 
'{ III.— 16 8 34 " Disappearance, E. 
'( III.— 16 10 17 " Reappearance, E. 
I.-16 10 27 " 
II.— 19 9 30 " " 
I.-25 6 52 " 
SATURN. 
The position of Saturn is better than last 
month, being lower; and we always feel repaid 
for looking at him. He sets as follows : 10th, 
10.0 even.; 20th, 9.25 even.; Soth, 8.46 even. The 
Moon passes 4° north of him on the 22d. 
ALGOL. 
Algol may be seen at minimum brilliancy as 
follows : 
February 15, 11.37 even. 
" * 18, 8.26 " 
March 5, 4.30 morn. 
8, 1.19 " 
10, 10.8 even. 
13, 6.57 " 
" 28, 3.1 morn. 
" 30, 11.50 even. 
APPEARANCE OF THE HEAVENS AT 9 P.M. MARCH 
20, 1882. 
Looking southward very nearly all of the 
brightest stars are west of the Meridian. The 
Pleiades and Hyades in Taurus are near the 
western horizon; Gemini is above them, and 
Cancer is on the Meridian. As there are 12 signs 
in the Zodiac and 12 months in a year it is plain 
that the signs of the Zodiac must be 30° farther 
west than last month at the same hour. West 
of the Meridian, Leo, the Sickle, and Regulus 
are the iirst in the Zodiac ; above them is Leo 
Minor, marked by one or two large thick clus- 
ters. Still east of Leo is Virgo and Spica, and 
above her is Berenice's Hair on a line and mid- 
way between the Sickle and Arcturus. 
Looking northward, The Dipper is to the right \ 
of the upper Meridian; the Little Dipper (in 
Ursa Minor) to the right of Polaris ; the prin- 
cipal stars of Draco below Polaris, and Cassi- 
pea's Chair at the left and a little below the 
Pole Star. 
THE MOON, VII. 3d OR S. E. QUADRANT. 
The region about the southern pole seems to 
possess several objects which bear marks of 
great age and hard usage. Just below Clavius 
is what appears to be the " ruins of a vast com- 
plex ring." The interior is depressed some 
14,000 feet. Look for it just after First Quarter. 
It is number 195 on the map, and is called Magi- 
nus. At 200 begins a series of lunar circles ex- 
tending northward and called the Great Crater 
Range. The Range consists of five walled 
plains of vast extent, and in some instances 
crater within crater, and the walls surmounted 
by lofty peaks. They S3em to resemble to some 
extent existing features in the Andes and other 
ranges. The first one, 200, has lofty peaks on 
its rampart. The next one, 201, seems to be 
connected with both the one above and below, 
and has a high peak on the west side. The one 
below, 202, is 7,500 feet deep, and below this and 
just to the right lies one 32 miles across and 
with walls which rise in places 9,800 feet above 
the central cavity. Just east of this is the 
" Straight Wall." This curious formation has, 
we believe, been mistaken either purposely or 
otherwise for a work of art, and it is well calcu- 
lated to deceive in that respect, for it is exceed- 
ingly^ regular, of uniform height, sloping gradu- 
ally to the " ditch " at the base of the east side. 
Its height is about 1,000 feet, and it terminates 
at one end in a crater and at the other in a 
branching mountain. Best seen one or two 
days after First Quarter, or shortly after Third 
Quarter. The central member of the Lunar 
Circles, 204, is 65 miles across, and on its west 
side has a peak 13,600 feet high. Just below and 
a trifle to the right is 205, the most interesting 
of the series. It is over two miles in depth, and 
in consequence of this great depth its lowest re- 
cesses are almost always in darkness, being 
only free from 'shadow for five days in a luna- 
tion. It is a fine sight to see the Sun rise upon 
t 
