New-York tribune., 1868-04-29
SCIENCE.

1MPROvENENT IN MAKING GiAss.-The
changes of kinds, which glass undergoos have
varieties glass perfectly cleaned owing
tts hyoscopie nate andhe tendency Of thus silleous
ble Bohemian glass sicate OF lime and potash but IL
Of the weknown fact that mixture OF carhonates
NJ potash and soda fuses at lower temperature than
Cor the potash and thereby obtains glass
o. the BoheDiau variety, but much more fusible
COLoRED INKs.-Fuebs's method of making
eHnee Of anne Of the color desired with two ounces
and half Of alcohol ; then to ED pint and half Of
driven on after which one ounce Of gun arabic dissolved
lowed 70 stand until the impurities have settled and 1t s
then ready for use. .-f
VALUABLE CEMEST.--Dr. Tollens mixes equal
very Se IS sand to Which s aided solution Of chloride Of
banc, having density OF l26 The paste thus formed
dentists have employed for the same paste
substituting powered quartz for sand This paste how
ever does not resist the action OF the SALIVA OF the mouth
foI any great length Of tune.
ORNAMENTED PAPFR.--Pusehel's process for
orDamentng paper with silky crystals mix the gum
known az British gum with equal parts Of Epson salts
and Of water to which is added q small quantity Of
mixture is immediately strained. While yet warm IL
spresdd WIN eaes naT brush upon paper previously
Per- being dried presents beautiful crystalline
ing the strength Of the solution and by drying the paper
more or less rapidly Crystals Of different nts may be
feidIsine Ae paper "H 'ns NA0 Oh eeS' instead OF
NEW ALLOYS OF LEAD AND TIN.-M. PHO
0eeerDes two alloys containing less tin than ordinary
pewter which are not acted upon by boiling acec acid
sail Waie and may therefore be used for some kinds OF
parte Of lead II has density Of se4 and mes
Fahrenheit IL IS made by frst melting the lead and
AIter examining H. gradually adding the tin; by stirring it
constantly with wooden stick the mean time the lead
prevented from settling the bottom The second
alloy consists OF part OF tin with lbs OF lead IL Is less
maDeabie aud more brittle than the first
The COMING RCLPsE-Both English and
French astronomers are making preparations for oserv
ing at the East an eclipse Of the 18th Of August
next which VIII be total for the space OF 40" along
line passing through Southern NewGuinea Hndosisn
the Bay Of Bengal, the Malayan Pen lnsnla and the
Gulf OF Siam Leyerrler recommends that the French
ships placed the eastern side OF the Maayan men
fpsna for the accommodation Of the Obseryers some
Interesting questions regarding the cOrOna and "red
names II s hoped, will then DE satisfactorily settled by
means Of the speetroscope. .r- . .... =.
ANOTHER AsTEROID.--On the 18th of Feb
ruafy Borelly Ofthe Observatory al Marseilles France
nov known, having orbits between Mars and Jupiter.
1ree nights later IL was observed by " Loewy with the
great meridian instrument az Paris.
CURE FOR THE CATTLE PLAGUE.-Chloride of
eoepef ~ extensively used III Germany against the
estte plague. The practice Is TO- dissolve Examines OF
and with this solution 10 wet pad OF COTTON, Whlch
laid plate and burned IN the center OF satle,
the heads O the aBnas being turned toward the plate so
10 breathe the fumes. This operation - PERFORMED
morning and evening pad Is burned for every three
head of cattle. The solution IA also administered inter-
Dsuy, With the addition OF 10 grnines OF eh0fViorn lor
tile shove named quantity "A teBspoOb1u OF TINS uQuo
N nj Aed with each animals drink three times day.
ELgcTRicITY ON MouNTAINs.-The Bit'so-
foee Vaigeyet eoptalns paper BY nenp qe saDfsgiS