Daily Republican., 1885-08-04
SClEN TIFIC.

SCIENTIFIC.
DIR. Koch recently attended . meet
ing Of specialists on the cholera ques-
tton, and reiterated as the general re
suit Of his researches that the comma
bacillus manifesto itself nowhere but In
cholera cases and Is never absent from
them.
Theodor Won Oppolzer has completed
his calculation OF the solar and lunar
and 2161 A. D., and has promised to
give the world the results OF his labor at
an early day. The list will likely be
first published in Berlin.
Pure solvents and pure rubber are alb.
solutely essential in making cemenif
for leather, wood or celiuloid. What
ever care may be taken IL following the
best approved recipe, failure or disap
pointment is the result If that direction
Is not strictly attended to.
President McCcsh of Princeton is
credited with the statement that the
age of n inc or ten years is the best at
which to attempt to acquire a knowl.
edge of languages. He maintains that
| a child of that age can learn more easily
than man of twenty five.
The experiments made at Vorosvar
| with the new fve.barrel Nordenfelt
mitrailleuse have given the follow.
ing results At 1000 yards range
| twenty Blk per cent. OF the shots took
| effect on target two metres high.
At 600 yards range seventy per cent.
of the shots struck. In the time
firing 100 shots in twelve seconds
| and 480 in one minute were register ed.
At recent meeting in Edinburgh,
DR.. FOULS gave o demonstration of the
ejaculation in the web of frogs foot
he means of the oxyhy.irogen light. The
light transmitted through q powerful
| condenser passed through an ordinary y
micro scope lens, and was thrown upon
large plate of ground glass at q dis.
| tance OF about twenty. five feet with
excellent effect.
Writing OIL the production of photo
graphs TO scale, q correspondent Of the
Field says II a man wants o carriage or
implement photographed 20 as TO make
| working copy to scale, all that iB
necessary Is, when o plate is being
taken, that a clear and distinct three
foot rule be placed ON the carriage OF
implement. The rule is photographed
with the other object and no matter
what the size OF the print or negative
may be, will al ways give true scale.
| Within certain linn it's such q procedure
| should prove very useful.
| "If," says Mr.. Coleman Sellers, "e
bar Of ordinary forged iron be planed
up to measure one inch square, and tn
bar be one English yard long. 1t will
weigh ten pounds. and the tenth of such
q bar will weigh one pound more aocu
| rately than will the ordinary liter Of
water weigh one kilogram. The English
engineer, in these days of iron, know,
when he uses shapes Of iron, rolled o.
uniform section, that the tenth of theil
weight IN pounds per yard gives him
the area OF the section, and that thii
one admirable Incident will long q,
the desirabihty of the present unit o
England and America"
The prediction of long epoch favor
able to agriculture in the northern
hemisphere is in danger of being falsi
ted this year in Europe especially
While frost has injured the fruit tree
and berry bushes and the early potatoes
in Great Britain, in France, German,
and the south Of Spain the outlook 4
decidedly gloomy. The winter whea
crop Of South Russia Is in very poo
condition. Farmers in Austria Hun
gary are far from satisfied with tn
effects of the unreasonable weather
Thus far the weather prophets hav
hardly received any confirmation of tn
accuracy of their forecasts.
The difficulties experienced b,
IdrauRhtsmen on account OF tho shrink
age of the paper, a correspondent Of
foreign paper says may be overcome b,
a system which he has adopted fo
many years. All drawing paper i
ruled with very faint lines to eithe
one quarter or one.ffth inch scale, ant
} with these Hnes. Whatever the alter
alton in size or form of the paper tn
variation in any square of one-quarte
Or ons fifth inch is a matter of n
Importance, and the drawing and seal
both being on the same base a read,
and certain means of correction alway
, exists-
il A Sc. ect committee of the British
House of Conn mons has after all, ant
, in direct opposition TO the draft sab
mitted to it's Chairman, issued q repor
favoring the maintenance OF an over
head system of electric wires in cities
This report is justly characterized by
Mr.. W. Slingo as bearing SO strongly
the stamp of a partisan spirit that it Il
matter of imposs;bility for an unin
terested observer to regard 1t with
equanimity."
l. After thoroughly exposing the singu
larly illogical nature of the statementi
Icontained in the report and the very
n iniquitous enactments it suggests. il
the course of which contention he cites
the opinions Of such high authoriiies al
Sir John Hawkshaw and Dr. Percy in
opposition to overhead wires, Mr
! Slipgo concludes that /" it is to bt
hoped that such legislation as Is fore
shadowed by the report may never see
tho light of day, for far better would II
be to let things go on as they are with
the certain knowledge that q catas
ltrophe Bnst4happon sooner or later, and
! that it would look undignified to have
to withdraw a concession once made in
( good faith
MFRS. MANY Y. PALMER, MAGNET
WI 10 physician, No. 14b0 North EIev.
| ant atYAet Pht{adelDhia