The Seattle star. [volume] (Seattle, Wash.) 1899-1947, 1899-06-16
Science of Today.


The delieacy Of modern scientific
Instruments II illustrated by those
Prof Neron noya recently used In
determining the earthn density.
Forces were measured BY them that
were equivalent Ia hut one twelve
mllllonth u grain acting at tho end
OF lever one Inch long.
Eiecirolytic processes havo largely
displaced old time methods In tho
manufacture OF ealanm and chemi.
calls. Through the agency ~ cleo
trlcity many pigments are now pro.
dured, and caustle soda. ehlorate 81
potash. bleaching power. etc. are
turned out IN great quantities The
prices. consequently are FAR lower
than In the years preceding the dy-
namo,
An enormous meteor recently drop
ped into the sea near iielsinEfor. In
Russia. penetrating Is feet into a bed
OF clay. II ia thought II Will be rails
ed shortly. az the iron and other
metals II probably contains would DO
OF considerable value.
DR.. Rollins. in the Electrical Re
View. says consumption can be die.
covered In its inelpient stages by the
use OF the y rayu. The signs can be-
detected 80 early that treatment ~
followed By prompf recovery. An
statistics show consumption rcnpon-
Hible for seventies Of the deaths
by disease. Dr. Rollins statements
are worthy OF attention.
iiy the urs OF a mechanical draft
an economy Of fes0o a year has been
effected ut the DATED states Cot
ton company's plant. Central Fails.
r. / Three iiaheoek & wilcox boil
ers 81 ans horse power each had pre-
viousiy been nred with a semi btu
niinous coai. a. the draft necessary
TO burn a cheaper grade was lacking.
The installation Of the mechanical
draft enabled them 20 burn a mix
ture costing only = 5 n ton. A fan
driven by a direct connected engine.
the speed 81 which vas regulated by
the steam pressure. supplied the rr-
CURED draft,
Aluminium IL generally supposed 20
be unaffectei by acids Mr.. A. White
IN n communication 10 the Paris
Academic dcs Sciences. proves this
belief erroneous. The apparent In
difference Of the metal 60 such re-
agents. he states. IL due 10 the fact
that IN their presence IL clothes ~
self with AN sfuperyiouH layer % al
umina- but n means are provided for
IT. removal or ita formation prevent
Ell. the aluminium readily dlssplvwn.
/ For Instance. a solution Of common
salt and acetic acid acts on the mot
al quite rapidly. the solution having
the power 10 dissolve the nmiumina
and expose the keep metal 60 oxi-
dalton.
A locomotive headlight using acct
ylenr saa has been devised by a
Canadian inventor. The apparatus
consists OF a cylindrical caEt-iFon
generator. Ave inches in diameter
and II inches long. together with a
water reservoir and condenser. The
charge consists o. about ten pounds
Of cafsbide. which r. rat ~ a wire
basket ard placed inside Of tho gen
orator. Tue water from the rcsrr-
voir. druppinx on the carbide. Eenef-
ssss the gas. which ts led through n
small pipe In front Of the reflector.
The well known fioosac tunnel.
near FltchbarK. Masss. viii soon be
thoroughly ventilated. one Of the
largest yenttlattnE fans ever built
will be- placed at the western end OF
the tunnel. and when u IL In opcr-
alton u will draw the smoke laden
gases and atmosphere from the In
terror. The fan will be is feet tn d.
amrter. with a capacity Of sso.oo0 Gu
bic feet per minute. n VIII be- OPP
Grated by electric power. and the
success Of this plan will solve a
problem that has troubled engineers
for over twenty years.
He makes rhynes for a sausage