The Cheyenne daily leader. [volume] (Cheyenne, Wyo.) 1870-1884, 1881-09-25
.ClExrIrIC nlscELLAxx.

A0AARAlEa vi liz i9aAcAs
Astronomers expect the temperance
before long Of a remarkable variable
star, which was observed In 945, 1884
and 1871. This star was seen at its
last appearance by 'Tycho Brahe, who
reported that IL became suddenly so
brilliant as to be seen ut noon. then
gradually faded away, and was lost to
view in about sixteen months after it
was FIRST observed.
A Neapolitan gardener, after years Of
experiment has produced a camelia
with q delicate perfume and thinks it
probable that these flowers may in tie
near failure be so cultivated as to rival
the rose In fragrance.
NJ. Troupeau has lately made numer-
Gus experiments with head-gear, in its
relation to heat from the sun. Ill.
reaches these conclusions, which may
serve rs useful hints: l, Head-cover-
iHgs Of conical and rounded form ar.
cooler than those Of fat shape; the he'll
met is accordingly preferable to the
kept In hot climates. 2. A thick body.
formed Of q substance which conducts
heat badly. protects e~ffectually against
the suns rays. 5 No metal should BIZ
used in the construction of head gear.
4. A good ventilation, obtained by
meant Of lateral air-holes at the top.
and q gallery at the base, ~isolating the
head, causes u very sensible lowering Of
the interior temperature. A head -cov-
er Of bad construction may be made
cool by good ventilation. ,
Experiments have been made In Paris
with q new kind Of military telegraphy,
which consists simply in reading large
letters by a telescope. 1t is hoped to
succeed ut 60 miles distance.
Leschmidt, whose observations have
been confirmed by Stoney and Sir w.
Thompson, calculates that each MOLE
cule Of hydrogen measures, at the most
not more than q Hfty-millionth Of an
inch In diameter-a minuteness Of
which we Ear form absolutely no con
eeption. With the most powerful micro
scopes, lines ruled on glass the ninety
~thousandth Of an inch apart "a be per-
ceived, although confusion of the lines
begins at the seventy-fou -thousandth
Of an inch, rendering distinct vision
beyond that limit impossible with any
instruments now known. Sorely be-
lieves that a length Of one eighty-thou-
sandth Of an inch would contain from
i've hundred to two thousand molecules
Say, i've hundred In albumen and two
thousand In water. 1t appears, there
fore, that the smallest sphere of organic
matter clearly visible in the most pow
erful microscopes would contain many
millions Of molecules OF albumen or
water. 9f 8arzHfea
In his address before the British As
ISOLATION Of science at its recent fifty
hrst annual meeting. Sir John Lubbock,
the president, said; "Summing up the
principal results which have been at
tained In the last half-century. we may
mention lover and above the accumu-
lation Of facts) the theory of evolution,
the antiquity Of man, and the far
greater antiquity Of the world itself;
the correlation Of the physical forces
and the conservation Of energy; spec
trum analysis and Its application to
celestial physics; the higher algebra and
the modern geometry; lastly, the innu-
merabls applications Of science to
practical iife-as, for instance. in photo
graphy, the locomotive engine, the ell
ectric telegraph. the ~spectroscope, and,
most recently, the electric light and the
telephone"