Elk City mining news. (Elk City, Idaho) 1903-1913, 1905-01-14
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Invention


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The pulse register of DR.. Gartner' OIL
Jenna, has proven berry successful III
ssening the surgeons work in watch
~ the circulation of patients unuer
naesthetics. 1t consists of watch
Ike box. which is attached to the pa
ent's forearm, and with hands that
re moved over the dial by sensitive
pring, very accurately showing the
lulse and blood pressure vibrations. VI
ven reveals pulse action so feeble tnat
he finger cannot feel it.
The much-ridiculed name of liquid
crystals" is still retained 10y DR.. Otto
Lehman, who has published an en-
larged list of the organic compounds
! having the peculiar properties. These
substances, as was first made clear
fifteen years ago, have two melting
points and at intermediate tempera-
lures move freely like liquids, but
polarize light like crystals and show
the dichroism of crystals. Whether
they are really like solid crystals is
still disputed.
In the survey of the Scottish lakes
which is now nearly completed, q
depth of 1,O17 feet has been reached
in Loeb Moran. This proves to be the
deepest lake in the United Kingdom,
and, as the surface is but thirty feet
above sea level nearly the entire bed
of the lake is below the surface line
of the ocean. Only seven deeper lakes
are known in Europe, four being in
Norway and three in Italy. AT a depth
of one thousand feet the tempera ture
of Loeb Moran is fairly constant
throughout the year at about AZ de-
grees.
Beginning with schools to teach
spinning by hand in the eighteenth
century, Germany has continued to
improve the instruction in textile in
dustry offered to it's people With every
advance of practical science as applied
to weaving and spinning. Textile
schools, where the manipulation of the
most intricate machinery is taught, are
now found all over the empire, and it
is held by some persons that they con-
stitute the main pillar by virtue OF
which the German textile industry
maintains its competitive power in
foreign markets. The courses of i'll
struction are frequently revised, and
everything is kept UP on a scientific
basis.
1t is so easy to obtain gold i'll
very pure state that its melt
ing-point is fact of much prac-
teal Importance because it serves
as a constant or basis of comparison.
in the measurement of high tempera-
lures. The latest experiments for as
certaininging this point with exacti-
tude have been conducted in Paris bv
Messrs. Jacquerod and Perrot, using
a special type of electrical resistance
furnace, and a nitrogen thermometer
of fused quartz. The melting point
was found to be 1862 degrees cent?
grade, or in round numbers about 1853
degrees Fahrenheit. This is about u
degrees Fahrenheit higher than some
former determinations, but somewhat
lower than others.
Moved by the apparent loss of time
and increase of errors caused by the
traditional use of Roman numerals in
designating volumes in photographic
references, DR.. r. NJ. Yerkes of Har-
ward has submitted the matter TO n
simple scientific test. Choosing fen
well-educated persons, he determined
for each the time required for writing
and for reading the Roman and the
Arabic numerals from 1 to 100. and
also the relative number of errors COM
United. His conclusion is that II takas
three and one-third times as long to
write the Roman numerals as the
and the chance of error is 81
times as great 1t takes three times AZ
long to read them, and the chance of
error Is eight times as great. An H.
lustration is the number SO, which in
Roman style is LXXXVIII. In tha
international Catalogue of Scientific
the volume numbers ara
printed in heavy-faced Arabic TYNE
NEWFOUNDLAND'S GOvlRNop