Sacramento daily record-union. [volume] (Sacramento [Calif.]) 1875-1891, 1884-09-19
SCIENCE AND FACT.

An asteroid No. 237 was discovered at the
Vienna Observatory on the 10Th of June by
DR.. Palisa. 1t is of the twelfth magnitude.
When a saw has cracked near the teeth,
to prevent its continuing drill small hole
at the end of the crack. This is said to be
effectual.
Professor Haeckel. the Darwin Of Ger
many, in studying the embryOOgy of the
chicken, has, with his assistants, Matched
and dissected 5000 eggs.
Among the 10000 articles of bronze be-
longing to the lake jewellers so far found in
Switzerland about 80 per cent. are rings. II
per cent bracelets, 4 per cent. knives, per
cent needles, 0.4 per cent. hammers and
o. per cent. hbulR.
When Arago was Director Of the OBJ
scryatory in Paris the gift in aid was less
than $4,000 year In the time of lie
yerrier it was $50 1000. Now the donation IS
$4,000, although the meteorological de-
partment is set apart as special service.
Paper wash-basins, buckets, and sim
liar articles for domestic purposes, are gen
orally made Of straw pulp, and after they
are rough made into the desired shape, they
are subjected To hydraulic pressure in
strong molds, where they acquire the fin
ished form
Good shellac varnish is made as follows :;
Take OF very pale shciac i've pounds,
mastic one ounce, and alcohol five or six
pints, and dissolve in the cold to prevent
the evaporation Of the alcohol, stirring the
mixture meanwhile. This il a good var
nish for furniture, and is much employed
in France by cabinet-makers.
The hight and velocity of the clouds has
been determined in England by means Of
photography. Two cameras, placed about
600 feet apart, are provided with instan-
taneous shutters simultaneously released
| by electricity. The observer measures the
angle of inclination of the cameras and
| the position of The cloud as photographed
| on the two plates and from these data a
| trigonometriC calculation gives the distance
and hight Of a cloud with great accuracy.
To polish fine carved wood take half q
pint OF linseed oil half pint OF ale, the
| white Of an egg, one ounce Of French spir-
| its, one ounce of spirits of ammonia Shake
well before using. A little is 10 be applied
! to the face of a soft linen pad, and lightly
rubbed for a minute or two over the ar
ticle to be restored. which must aiterward
be polished Off with an Old silk handker-
chief This polish will keep any length Of
time if well cOrked. 1t Is useful for cabinet
work, and is also recommended for papier-
mache work.
Man, according to ". J. Knowles, must
have taken up his residence III Ireland at a
very early stage in the history the world.
Mr. Knowles has discovered tlints at Lane
and other places on the northeast coast of
that country, some of which he believes
show evident traces of human workman
ship One large Clipped implement was
found in what appeared to be true undis-
turbed bowlder clay. There are other tools
which Mr.. Knowles has in his possession,
which seem to indicate that man has lived
in Ireland long before the paleolithic pc
Rod, during, in fact, the glacial epoch.
The changes which thermometers under
90 when heated for d long time have re-
ceiyed the attention Of the French Academy
Of Sciences. 1t appears from Investigations
made in this line that in manufactures OF
printers ink, where oils are heated 10 a
temperature of some 1882 Fab. for many
DAYS. the most accurate thermometers often
become so changed as to indicate errors Of
ten or more degrees. Similar changes of
much lower temperatures are also men
toned Thus the acrometers which are
employed in sugar refineries where the
moiasseS is treated by osmOsiS are plunged
for many days in liquids which are heated
TO 203o Fab; and although this tempera-
ture is below the, boiling point Of water, it is
found sufficient to completely modify the
sCrometers. and to soften the glass enough
to render them untrustwOrthy,