The Vancouver independent. (Vancouver, W.T. [Wash.]) 1875-1910, 1883-07-26
SCIENTIFIC SCnArS.

DIR. w. Oswald shows that the gradua-
ton of burettcs is almost inaccurate as
they come from the man ufacturers.
According to Maciejewsky it pays bet
ter to manufacture overgrown wheat into
spirits than into bread The best results
are obtained from nnbruised wheat.
Bars of steel obtained by the cementa.
ton process in the works at Unieux fire.
quently contain crystals in those portions
exposed to the hottest portion of the
furnace.
Professor Vogler considers that part
of the duty OF observers at meteorological
stations should be to ascertain the guam
tity of oxygen in the air from time to
time, as he believes that the percentage
of it varies or is intimately connected
with barometric changes.
When carbonic anhydride, says Prof.
Z. Noack, is passed over heated zinc
dust contained in combustion tube it is
almost completely reduced TO carbonic
oxide, the last traces of carbonic anhy-
bride being easily removed by passing
the gas through some soda solution.
A specimen of preserved milk sealed
by Nageli in 1872 was opened lately. It
had become brOwnish, and it had
acquired bitter taste. The milk-sugar
was converted into lactose and dextrose.
Sufficient proos was obtained that heat
ing to 100 degrees under pressure from
two to four atmosphere, is inadequate to
destroy germs.
In constructing the photo. electric bat
terry DR.. Borgmann places . number OF
U tubes in black box having removable
sides, and fills the tubes with . per cent
solution of sulphuric acid, the light be-
ing carefully excluded. Silver plates
iodized on the surface by electrolytic
means are immersed in the acid. On OF.
posture to light an electric current is set
up.
Experiments have been conducted by
DR.. Masure on the evaporation Of water
from the soil. The soils tested were
Loire sand, chalky soil. consisting Of
sand, 4 per cent; clay $50 per cent;
garden soil, consisting Of sand, 81 p6r
cent; clay 20 per cent, and clay manure
SD per cent. The action of the sandy
and chalky soil was very rapid.
This employment Of dried potatoes is
recommended by DR.. Kohne: First they
kiln, whereby Ga to 66 per cent Of their
WC18os 10 A0bts n uoou 00uo AIOk0 0OC0
dried potatoes ferments normally. II 10
expected that this process will be en-
ployed with advantage should there be
any great outbreak Of the potato disease.
All mushrooms, DR.. @. Dupetti finds,
contain poisonous substance whom IN
cookel. Fresh sap taken from the
"Boletus edulis" administered to rab-
bits, guinea pigs aud rats by suboutane-
GUS injection caused their death. The
cap Of "Amanita csessrea," "Amanita
vaginata." "AmAnita rubeosns. ""Agari-
Gus campestris," etc., has . similar
action. The poisonous action IL due 10
something in solution, and not 10 extra
neous microbes.
Dannsnberg, in preparing silvor nitrate
from IL marks in 60.pfennig pieces. Oh.
tanned fivs 10 six mgrm. OF gold. HE
statement that whom the mark coinage
was introduced into Germany the gold
contained in the silver vas not removed
il erroneous, - altar the Introduction Of
the vet process IN 1895 The Hamburg
parting works refined more than half ~
silver coins collected, while NE otbesv
we're worked up at Frankfort on-the.
4ain, Munich. Oaslsruns, end 0eate-
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