Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1890-04-18
SCIENTIFIC ASB INDUSTRIAL

Produced in zinc by the saiNano-
plastic process at q cost Of five cents
each, selling price.
Indicating the Presence Of Fire
damp.-A small instrument has
been devised for use in mines TO in
dictate the presence Of firedamp, or
in gas mains to indicate the escape
of gas. The invention is lased upon
the property certain metals have Of
evolving heal In the presence Of by
drogen gas.
New SOund-Recorling Apparatus.
In monographs, graphophones
and similar sound recorders, use i
usually made Of cylinders covered
with tinfOil or wax for receiving, rs
the cylinders revolve, the impress
sion made by the scribers. A new
sound--econling apparatus operates
on an entirely different principle.
The cylinder is replaced by a fiat
surface, which is made 10 Oscillate
and move downwarus at regular in
tervals by special mechanism.
The proposed railroad bridge over
the Hudson river at New York,
planned for six tracks, with a mid
die span $50 feet, will have an
entire length, including approaches,
OF over five and quarter miles.
The cost OF the bridge itself, includ-
ing the anchorages, Is estimated at
Sl5, 900; Of the approaches and
connecting railroad switches and
terminal stations, Sill, 10000; the
right-of-way, etc, $4,000, 600; max
ing a fetal cost OF over 50, O00, O00.-
Err.
New Disease.-The latest new
disease is ''sleepiness.' IL seems
that those who have had n severe
attack Of Russian influenEt are liza
bile to an attack Of "La Mona" as
il is called by the country folk OF
Italy and South Germany. That
conditions Of the human subject
known rs "trance" are peculiar and
not frequent is a matteHof common
experience; but the new trance, or
lethargy, seems to he something en-
tirely out Of the common, and is
more psychological than patholog-
ical.
Glazing a Blast Furnace Lining.
"A successful experiment was re-
Gently tried ut Lake Champlain, y.
Y, on the occasion OF the refining
and starting in bias. OF large fur
mace there. After the fire-bricks
were in place a CHEAP kind Of gra-
phite or pIumbagO was reduced TO
a paste with water, and with this
the interior Of the furnace was
washed. II gave a slippery glaze to
the friedrich lining, which effectu-
ally prevented the coating with
Stag, and the charge passed down in
a less time than usual and left the
lining free and clear.
Homemade lee. - Prof. Z. L.
Nichols foreshadOws a very agree
able picture. He says that in all
probability the day Is not far iista st
when brine, cooled below the freez-
ing point CT wafer, will be carried
under the streets in pipes, rs steam
is now, supplying from central sta
tons a very convenient substitute
I for ice in the domestic household.
By freezing in our own homes water
which has been previously boiled, il
/ will then be possible for us 10 avoid
cOntagion from disease germs con-
tanned in ice gathered from impure
sources. The maintenance Of the
temperature Of dwellings at several
degrees Fahrenheit throughout the
/ summer will then be as much a
matter Of course as the warming OF
n modern house is ia winter.
Sugar Cane from Seed.-A new
field OF Investigation in regard to
sug3r-caue cultivation has Just been
! opened up. At 4 meeting of the
/ Limneant Society, England. Mr.. ID.
Morris referred 10 the question ofthe
production Of seed in some varieties
Of the sugar-caue. II was pointed
out that, although well-knOWn as a
cultivated plant, the sugar cane had
nowhere been found Wild, nor had
the seed been figured or described, il
being the generally received opinion
that having been prOpagated en-
I tirely by slips or cuttings. il had lost
the power OF producing seed.
Spikelets, however, received al
Kew, had been carefully examined,
and the seed found. Mr.. Morris
anticipated that by cross-fertiliZa.
tan and selection OF seedlings the
sugar-cane might be greatly i'm,
proved, and much importance was
attached to the subject, as very
material issues are connected with
il.
Novelties in Photognphy.-Many
novelties and ingenious mOdifica.
tons Of existing processes in photo.
graphy have been shown at the
yearly exhibition Of photograph
at the Crystal Palace, Sydenham,
England. Several makers are try.
ing the experiment OF substituting
aluminium for brass in the cOnstruc.
ton Of tourist cameras. with the ob.
ject OF decreasing the weight Of the
/ a sparatus. One firm shows some
new time and instantaneous shut
teHs, which, when in action, do mol
cause the camera TO vihrate OF
swing. One maker has adopted q
double eccentric motion for the pur.
pose Of bringing the lens to any
part Of the front board, thus doing
away with the skewing Of the bel
lows. There is 4 tendency on the
/ part Of amateurs toward the PLANO
type process, but the results are not
on the whole satisfactory, from the
fact that most amateurs use cheap
and thinly-coated plates.
Manufacture Of Ozone-Dr. FOrs-
ter, Of Berlin, has recently urged
the importance Of cndeavOring to
supply a small quantity Of ozone %
the air Of towns and other thickly
/ populate 1 districts. and has pointed
out that many epidemics-e. &, in
fluenza-appear TO take place at
those seasons Of the year when the
atmospheric ozone is at n minimum,
aud II is thus argued that an arti.
fetal supply Of this gaseous
oXidizing agent would possibly
prevent, and, at any rate, con-
siderably modify such outbreaks
Of disease. This idea has been much
discussed in the medical and scien-
| liIlc circles OF Germany, anu mas
led to the formation, in Berlin, Of n
company for supplying the neces~a-
~ plant for the conversion Of oxy-
gen into ozone on a larger scale than
has been attempted, aud to develop
the use OF ozone for many sanitary
purposes. Steps are being taken for
extending the operations of the
company to New York and London,
as the company has secured patent
rights on certain improvements in
the electrical production Of ozOnC
from atmospheric oxygen in most
c0untrie>. The Berlin doctors have
repeatedly employed ozone with
very satisfactory results in individ-
ual cases, and recently the company
above alluded to have placed on the
market a so-called ozonized water
I which IA stated 70 La n eplIfinu ~