New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1879-02-15
SCIENCE FOR THE PEOPLE.


4 NEW EQUATORIAL Mcssrs Avian clark
& Sons of Cambridgoport Mass, whose fame as teic
scope makers IA world vide have Just furnished '"i'V'
College Mortified MINI, with new eqnatorea- i"o
mounting OF the Telescope IL Of the latest anu nos
proved style. IL rests on tr0peLoId VI pii0A
extending six feet above the capstOne OF tue "'" ~
which is even with the floor Of the dome OF the ooT'f
atory This brick work supports base OF cast no''
made 10 receive the POLAR and equatorial a1ea "nc"
carry the right ascension and dcclinaton circles Inc
former circle IL eleven inches IN diameter anu ie"
two seconds OF time; the latter Is fifteen ihcneS III VI
ameter and reads 10 thirty seconds OF arc bol" q"
divided on silver provided with verniers. ana reau
ing microscopes. These circles are OF efcciien' WI"
manshp. The object glass has clear aperture Vi CT"
and ourth inches and focal length OF ten ana Que
half feet II is mounted tube made OF STEEL anu
painted black, except the finely FURNISHED orass INNS"
that carries the cell for the objective ana lho cSep
The telescope Is provided with position ihoIone''i'
an Illuminating apparatus and everything thatcap DC ue
sired for fine measurements and douDe-star WORK !"
general There ia full battery Of eyc-pieces giving
the widest range OF power that can be used with zee
scope ~ the s'Ze The drivnBtIoTA ~ h'uN ,uoto
Eond sprtng governor drivng-clock The new eluatoI
rai 10 AN admirable pisce OF work, has been MOUNTED
and adjusted by the makers win the greatest c"t I'M
viii be certain give an excellent account OF u.s.,
etboTgh il cannot hope rival such largo instruments
az ~ ,nrh rafracIor at the Naval Observatory
CSs~ry3tory Chicago Goth OF witch, IN the hands OF
TrofIssors I'LL and Burnham, have done so nuch "
extend the reputation of Messrs CLARK CONS
THE TTLECTRosCoPE.-M ScnleCq, of Andres,
France has recently submitted tue plan oil an apparatus
intended 10 reproduce tcegTa phicaly at distance inc
images obtained iu the obscura The apparatus
k basod on the uropery possessed by selenum OF offer
ing variable and very sensitive electrical resis'"
according TO the different gradatons OF light IL cosSS
OF an ordinary camera Ooscura containing ~ INC oou
an IN polished glass and system OF autoGraphic 'er
eqropc trausmissoni the tracing point of the trans
he
glass t formed OF a small peco Of sclenum held by TWO
snrino acting az piucers insulated aud connected one
with pile the other with the line Inc point ol se'o"
uIn forms the circuit. Ia gliding over 'e sur
face more OF less hghtencd M of te nhp''-
hcd ass this point communicates in different degrees
and with great sensyenoss The vibrations OF inc Ah
TIC receiver tracing point OF hackeai or penc' TOT
drawing very finely connected with very thin plate o.
soft ron held most IN the Bel telephone ana VI
brdtug before oiectIo-mdguct' eGyclhou Nv ,mo
porting sheet Of paper arranged so ss To lect,e Vs.
impression Of the image ploducrd III ING lie
scra translates the vibrations OF the Ineta' PINE
y1rlin Of tlo new machine viii he watched with some
nTcSf Llt al present II Is theoretical IatGt. than
practical
UTAH MINERAL WAX.-The great deposit OF
mineral wax native parafl'n". lately discovered III
Southern Utah. saws me Scientific American. IL de-
scrbed bv Professor J. r, CLAYTON OF SAT- Lake Cy s
occurving an area sixty miles long by twenty miles
wide. and IN some places lViHliE - 'SH '"'N'J 49,
thick It contains more less clay in seams and layers
but fms is readily eliminated by melting. II IS quite
black IN the mass but the sections are translucent Inc
quantity SAID to be enormous so great ln"cc", 'ho'
II cannot be controlled ny any lndiydu or company
bu. must prove "a source of wealth To whole COMMUNE
tIca Professor Henry Wlrtz prouOunces the mineral
20 he zetrsksite and Gays that It differs from par"fne
Ivy bein soluble in ether and otherwise. Pr0ies1orJ
T. NcwIerry nuds the speciment brought by him from
Utah 10 he trne O2okere. and similar in all respects
except color. that from Gallca-a true pard'nhe'
melting at coo G., and being soluble in ether As 10 the
orin and geological relations Of tina remdTkaDe Ded OF
nora0luc-whtch 90 far as known, ia without paaICi
g., nu.ttiiy i'm the world and as much % " wonder"
as 6ur basin. OF Newhcrry cannot
sneak with any confidence until he has visited the To-
chv where IL occurs be hopes 10 do IN few weeks
H. suspects, however that II WI be o'I.d 10 p I
evolved producer, the dstatOn OF beds OF creaceous
Ignite, and the residue OF petroleum UNUSUAL! Ich
in paiaiine.
THE NORTHEAST PAseAGE.-PrOfessOr Nor
denskj0ds vessel the Vega having got shut In ny inc
ice near East Cape in Behrng Strait the Committee Tor
Promoting Trade and Industry have resolved TO
sppy to tho Governor General OF Eastern Siberia re-
ouestng hun assist In institutiug search aud OBJ
tanning more certain Information TO the situation OF
the expedition. Mr.. w. Ii. Dali, the cll-kn0wn Aassa
eIporer, has written letter TO an acquaintance III
Stockholm, mentioning the previouslyreported state
ment OF whalers from which It is supposed that the
Vega has been stopped by cast OF Cape East Should
ls be the case Mt Dali enterta'ns fear. Tor the
fate OF the expedition II these supposons be correct
he SAYS breakingup Of tho ice next july VIII leave
open water for the Vega TO proceed TO Behrng strait
Vessels pass to westward OF East Cape every year
There T. creek there river with fresh water runs
nto the bay and on the coast IS native village rms
il not marKcd the ordinary maps and charts ana b -
lust mere that the vessel according 10 the reports OF the
natives must be lying She can saloiE Mlhier tnIe
There village. inhabited by IcnuRtenets' Sno
would be- able supply fresh meat TINS place Is sltu
ate not more than 200 English miles from me whlte
mems trading station At Plover Bay. II the Vega Is
living there Of the operation Is practically
nd docs NOT GET Closed by fee until October. Vessels
sal ere and carry trade every Summer"