92 
THE YOUNG SCIENTIST. 
lionis. Jupiter is complete! j'- surroimded by in- 
teresting and beautiful objects. The Seven 
Stars, or Pleiades, Saturn, and the Hyades, are 
upon the west or right ; Capella, the Kids, and 
the Segment of Perseus north of him; Castor 
and Pollux, and the other bright stars of the 
constellation Gemini, with Cancer and the faint 
little cluster of stars called Praesepe, are to the 
left. Near Prsesepe is a very noted triple star, 
Beta Cancri or Tegmine by name. This star 
may be readily found by being pointed at by 
Castor and Pollux, and at double their distance 
apart from the latter. Two of the members of 
this system perform a binary revolution in 
jibout sixty A'ears, and the other performs a 
grand orbital ellipse in Ave or six hundred 
years. This and many others go far to verify 
the theory that each star of the firmament is 
but the central member of a solar system simi- 
lar to our own. Suppose an observer situated 
outside of our system, at a point sufficiently 
distant as to render all but the Sun invisible to 
the naked eye, and the Sun reduced in apparent 
size to the grade of a second or third magnitude 
iitar. Then, with a powerful telescope, he would 
see the two giant and partially self-luminous 
planets, Jupiter and Saturn, as attendants upon 
the star, making a triple star. Thus all star 
systems, binarj^ triple, quadruple, and sep- 
tuple, would seem to be but visible portions of 
large systems having a common centre of grav- 
ity. Orion is between Jupiter and the southern 
horizon, Betelguese (pronounced Be-del-gseze ?) 
Ibeing nearly midway between Jupiter and the 
King or Belt of Orion. 
Eclipses of Jupiter's satellites may be seen in 
the early evening hours, as follows : March 5th, 
9.51 reap.; 13th, 9.10 reap.; 21st, 8.11 reap.;28tli, 
10.7 reap. ; 31st, 7.8 reap. It will be interesting 
to witness the entire eclipse of tlie fourth satel- 
lite on the 18th, beginning at lOh. 40m. 29s., and 
ending at llli. 39m. 13s. The following Jovian 
events will also be visible in the e^'enings of 
March : 
Occultations. 
Sat. D. H. M. 
III. 2 7 3 disap. 
III. 2 9 48 reap. 
I. 5 6 18 disap. 
II. 27 9 6 disap. 
Sat. D. 
I. 4 
11. 4 
II. 11 
Transits. 
H.M. Phase. 
III. 20 
I. 20 
IV. 26 
IV. 26 
III. 
I. 
ingress. 
egress. 
ingress. 
egress. I 
ingress. ( 
egress. 
egress. 
ingress. { 
egress. \ 
ingrt'ss. 
ingress. 
parent semi-diameter of Jupiter at the time of 
this transit is about 18", while the distance of 
tlie fourth satellite south of the major axis of 
the ellipse in which the satellite moves is 17". 
It will thus be seen why the transit is of such 
short duration. 
Saturn is in the eastern pai't of the constella- 
tion Aries, where aline from Sirius, through thf 
Belt of Orion or the Kings, will touch him, 
when produced as far again. He will be 1^ 
south of the Moon on the 13th, and sets on the 
10th at llh. 4m. eve.; 25th, lOh. 12m. eve. 
Uranus arrives at opposition on the 12th, and 
will be brightest at that time, being readily 
picked up by good eyes. He presents no phe- 
nomena of interest to the telescopist, not even 
his four satellites being visible except with the 
very best telescopes. Every person, however, 
who knows anything at all of the heavenly 
bodies, should be able to say that they have 
seen all the planets visible to the naked eye. 
Uranus passes the meridian as follows : 
March 5 0 40 morn. Dec. 4° 4'-f 
15 11 55 eve. Dec. 4^ 15'+ 
20 11 14 eve. Dec. 4" 25'+ 
25 10 50 eve. Dec. 4° 31'+ 
Look for him on a line between Kegulus and 
Spica Virginis, and just about midway between 
them. The third magnitude star Beta Leonis 
is very close to him, being but one degree 
north. 
EPHEMEEIDES OF THE PBINCIPAL STAES AND 
CLUSTERS, MARCH 21, 1883. 
Alpha Andromeda (Alpheratz) sets 
Om icron Ceti (Mira) variable " 
Beta Persei (Algol) variable " 
Eta Tauri (Alcyone or Light 
Pleiades) sets 
Alpha Tauri (Aldebaran) sets 
Alpha Aurigse (Capella) in merid. 
Beta Orionis (Kigel) *' 
Alpha Orionis (Betelguese) " 
Alpha Canis Majoris (Sirius or Dog 
Star) in merid. 6 
Alpha Cauls Minoris (Procyon) in 
0 
of 
11 
11 
5 
5 
5 
It will be seen that on the 26th, Sat. IV. makes 
a transit occupying only five minutes. These 
events are of rjire occurrence, this being the 
only one visible until next September. The ap- 
meridian 
Alpha Leonis (Kegulus) in merid 
Alpha Virginis (Spica) rises 
Alpha Bootis (Arcturus) " 
Alpha Scorpionis (Antares) rises 
A^/'/ia Lyrae (Vega) " 
A lpha Aquillae (Altair) " 
Alpha Cygni (Deneb) " 
Alpha Pisces Australis (Fomalhaut) 
invisible. 
Penn Yan, Yates Co., N. Y. 
M. 
57 eve. 
5 " 
38 mor. 
12 eve. 
30 " 
12 " 
13 " 
53 " 
44 " 
37 =' 
5 " 
59 " 
2 " 
9 mor. 
42 eve. 
22 mor. 
45 eve. 
