Evening capital news. (Boise, Idaho) 1901-1927, 1914-07-19

of the moon eclipsing the sun the solar edge
slightly thrown back in two little points.
Thollon observed the last eclipse also in
Egypt where it was total, and noted thicken-
ing of the rays of the solar spectrum, appear.
ing to indicate an absorption due to light
lunar atmosphere.
have often observed, especially on that
part of the moon to the north of the groove
OF Hyginus, on lunar landscape we'll known
to selenographs, a grayish tint indicating a
variation of the soil independent of solar light
Besides. I have observed a twilight effect
when studying the vast east plain of the Sea
of Serenity on the third day of lunation. The
dark spots on the moon, spoken OF seas
not as we know, real watery expanseS
but gray plains.
Well, in that plain to the north, the irregu-
lar circle Of the Caucasus, and south, the chain
of Menelas emerge like two luminous points
visible through ordinary opera glass. The
lighted edge of the plain is not cut off sharply
by an abrupt line separating the lighted coun.
try from that which is still in darkness, but
it melts gradually, as If the summit dropped
1t is a real penumbra. Calculation shows
that the solar disk should produce, by its
size, penumbra of S2' of the arc of the great
circle on the moon, which would be about ten
miles. But l have often observed a much
larger penumbra
The question of lunar atmosphere is very
closely connected with that of volcanoes and
eruptions, attended they are by vapor and
gases formed in some way. It seems as If the
craters scattered all over the moon are not
active, and that they emit no vapors. But this
Is too radical and premature statement.
William Herschel considered Aristarchus to
be active. stating in 1887 that it burned
with great brilliancy. lighting up all around
It, But there are other reasons for holding
that the moon is not a dead star.
dead star is one upon which there Is
no motion, no variation, unmoving globe.
but many instances may be cited to the con.
trary.
The crater Linnaeus has been proved BY
latest observers to be subject to wide varia.
TONS possibly due to increase or diminutioa
of snow, and the double crater, Messier has
changed greatly since 1t was so carefully
studied between 1929 and 1897 The crater
Taquet disappeared altogether in 1911, accord.
ing to Korn. although neighboring and lower
craters are still visible.
The observer notes variations dependent
upon the date Of Elimination, but independent
OF course, of those which are caused by the
variations of solar lighting. which may be
more or less oblique, and concludes that
uHoeF Tue acllon OF certain geological phe-
nomena Of the exhalations Of vapors escaping
from great depths. the crater is masked"
staemmler writes that on January rs. 1912.
Taquet seemed to him to be covered by trans
parent vapor through which he could dimly
see the shadow OF the walls of the crater.
what Is the nature of these emissions? Are
they geysers OF water? Are they smoke?
Vapors Of carbonic acid? Jets OF pulverized
matter? No matter what It be that Is thrown
up from the eruptive mouth that which IL
thrown 10 fror,, 81
iy observer, and this makes the examination
all the more difficult. Besides we see these
activities from great distance. The moon is
1914. BY the Star Company. Great Britain Rights