Evening journal., 1897-08-04

any rate, undergo scarcely any percept-
ible changes. There is especially one
called the great red spot" discovered
by an American professor in The year
1878, which, according to accurate call
culations. occupies a space of over 200
million square miles. A strange feature
Of this immense spot was its changing
color and shape during subsequent
years. No satisfactory explanation has
as yet been furnished of this strange
phenomenon, though, as usual in such
cases, a multitude OF speculations have
not been wanting. AS many changes
have been going on on the surface Of
Jupiter than cannot be accounted for
by the amount of heat the planet re-
ceives from the sun, the idea has for
chilly obtruded itself upon the mind of
scientists that to some extent Jupiter
is sef-luminous, a kind Of semi-sun. In
fact, this assumption has grown into
generally accepted belief.
On of the finest features of Jupiter is
its satellite system. Until the recent
year 1892 the planet was not known to
be encircled by more than 4 satellites,
but in that year Mr. Barnard, of the
Lick Observatory in California. discov-
cred a fifth one by means Of his magni-
ficent telescope. The famous Calico,
the first one who used magnifying
glasses for astronomical purposes, dis
covered in 1910 the four satellites OF
Jupiter, so that they must be regarded
as the first heavenly bodies ever dis
covered. " These satellites, of which one
is as large as our own moon, but the
other Three larger. are generally desig-
mated in order of their distances from
the primary, but also bear the proper
and, as usual mythological names. To-
Europe. Ganymede and Calllsto. Their
orbits coincide so nearly with the plane
of the planets orbit as to be COM
PEELED to pass all through the planets
shadows, and thus to be eclipsed at
every revolution around the primary
One of them has its orbit sufficiently
deviating from the plane of the plan
cts orbit that it sometimes escapes
eclipse
THE CONSULTATIONS.
The principal consultations that at
about o'clock will be on or near the
meridian during the August evenings
are Draco, Lyra, Saglttarius and Aquila
Draco is one of the five circumpolar
consultations that never set in our lati-
tude, and is one of the most extensive
in the whole heavens. The head of the
fabulous monster is prominently mark
ed by four rather bright stars, forming
a somewhat irregular quadrlateral. II
winds itself in a long curved line be-
tween the two Bears, separating them
from each other Drawing a line from
Nlizar, the second in the handle of The
Dipper of the Great Bear, to the star
Gamma in The bowl of the Dipper of
the Lesser Bear, it's middle point is
marked by a star. Alpha DracOmi or
Thuban, which 1000 years ago was the
pole star, and much nearer to the true
pole of the heavens than POlaris
is now. The constellation Lyra is dis
tinguished by one of the brightest fixed
stars in the slxy-Vega, a sun unques-
tionably many times larger than our
own. South of Vega there are. at a
short distance from each other the two
stars Beta and Gamma Lyrae. At a
very short distance east of Vega there
is a fourth magnitude star, Epsilon, a
Quadruple star that is. one that con-
sists of four suns revolving about one
another. A keen eye can perceive the
duplicity of this star without the aid of
magnifying glass, but the duphcity
of each of these can be seen only by
means of a powerful telescope. Sagit-
tarius, on the Archer, is the tenth of the
zOdiacal consultations. and may With
out difficulty be recognized by its re
semblance to an inverted "milk-dipper.
The Milky Way is particularly bright
in this constellation AMI full of stream
ers and dark pOckets. Aquila. or the
Eagle is east of Ophiuehus and north
Saggittarius. The principal star IN this
constellation is Alpha or Affair. tho
standard first magnitude STAR At equal
and short distances from It there are
two rather bright stars, Beta to the
south and Gamma to the north Cynus
is high up. With Hercules and the
Northern Crown bending toward the
west, Bootes with the first magnitude
star Arcturus in the southwest, Scor-
pio with the red star Antares and the
| grand planet Saturn, also bending to-
ward the west. the August heavens pre-
sent a beautiful panorama.
Take your mother, your wife. your
children to Shellpot Park. strictly
irst-class." Free. free performances;