Weekly national intelligencer., 1851-04-12

a. 96004 inches has cost "a very reasonable price, say
NJ. Arago) $4,000 francs (about s5.O0O.) This objsc
glass; Of which the excellent quality is fully recognised
from the factory Of French op.ician NJ Lsrebour
and is made Of French fint-glass and crown glass
eve are induced 10 believe adds M. Araao, "that
will support amplfcaticns OF from two three thousan
times. NJ Drummer, the artist engaged erect this insu
the observatory Of Paris calculates the cost of h
paraacic stand will be ALMOST eOO the appropriation
asked for but the noble supoa of the observatory will ad
init OF this the stand will be constructed upon scale tina
will suffice without additional expense for telescope of doubI
aperture, the length Of which may urpass by fifteen TWEEN
ty feet, the largest instruments present e1ising !"
"Let me explain connaes the reporter, sswhat
the advantages to be derived o teeopes and from
the equatorial mounting for which the appropriation
10000 francs is asked Il would be superaous. Let vi
commence by this remark to insist upon the indispensable
necessity of ensuring, by of clock machinery,
equable m,ion, free from jerks TO instrument intended
to bear large msgnying powers for this point has been
treated by NJ le MiIistre in bis erpo with all desirable
precision.
"When Gaeo had constructed his telescope upon this
model Of that Of which the sports of chd had revealed the
discovery TO the optcisn of Mddebourg directing upon
the heavens he dscerced here objects situated beyond the
reach of natural vision the phases of Venus the satellites Of
JUPITER the mountains Of the Moon the spots and the rotary
movement Of the SuD the prodigious number Of
posing the milky way That telescope had focal distance
Of hardly yard, aperture Of Al mimetres 6l4l7
TO say, very little than opera glasses nowadays The
searching eye Of Calico armed with Of these nsiru-
ment Of which the mode of action then mystery, dis
covered that Saturn had not sphefoda form, but
able to detect the of those Irregularities The discovery
Of the veabe Of that heavenly body given reputation to
the saras who the first enabled examine it with
telescopes Of greater power than that employed by the illus
ous philosopher of Florence There in the armament
phenomena which bear the relson the telescopes Of
the present. did the Irregularities in the form of Saturn to
the imperfect instruments of Calico. The application Of
powerful telescopes Of high magnying power will demon
srate what is now probematcaL With these telescopes,
when they shall be fitted with parallacc apparatus shall
be enabled, without doubt determine, by system of OBJ
servaons similar to that already adopted by Besse the dis
tance from the earth Of many of the stars We shall know
if the sixty first of the Swan Of the if there
many placed within such distance that light from them
could reach less than ten years. supposng the velocity
Of light be 77000 leagues s6, 500 mles) per second
Then shall be able follow the changes in form Of those
aggcmeraons Of luminous matter called neba and
tain If the last terms Of concentration Of their brilliant matter
be, properly speaking, stars, veriabe Then will be
acquired respecting the physical constitution Of the planets
and Of the precise notions where all rests at present
in the domain Of conjecture Then will be studied with
actude the revolutions of the double stars those revo
wing about each other and geometes will be furnished
with the of deciding whether the gavitaton which
regulates the Of the planets system extends
to the arthest bounds of the visible creation. Then finally
will be enabled to follow the comets to their extreme
distances and deduce from their variations in volume and
form precious consequences touching the state of ether in the
celestial space II reflects that in matters Of science and
most especially astronomy the unforeseen always forms
the lions portion, will understand how desirable it
that the heavens should be regularly explored by in
France with the aid Of instruments of great power and
precision Foeseen not foreseen, the discoveries with
which astronomy is soon to be enriched, will touch, most
assured, upon the delicate points Of natural philoso
ply. Now, when something great shall be given to the
world France it will be admitted upon all the benches of the
Assembly, will be wanting her mission, if she shall have
failed to take her part in the discovery"
NJ ARAso says, in conclusions that it will be impossible,
with the utmost possible expedition 10 complete the
mounting of the telescope in the proposed during
the present year.
remark that in the budget of 1882 recently submitted to
the Assembly, there already appropriation of 76O
francs allowed to astronomical establishments. While the
sheets Of the Mneur before my eyes, let note some
Of the other items included in the budget fer the promotion Of
French science and terature To the Institute Of France
572, 500 francs the College Of France 10000 francs
Museum of Natural History 49, $50 francs National Ii
bray 900 francs other public Libraries, 22o 900 francs
National Academy Of Medicine, 700 francs; School Of
Char.es 35 400 francs School of Living Oriental Lam
guages and Of vulgar Arab Marsees, 500 francs
Fund for the encouragement of and of letters,
900 francs Scientific missions and travels, and evening
lectures 900 francs collection and publication Of uneded
documents of National History, 100000 francs to learned
societies. 35 900 francs faculties Of theology law, medicine,
sciences and letters 1859 1921 francs Total under the head
of "Pubc Instru ton," s4, $50, 900. .s.. (.