The Saint Paul globe. (St. Paul, Minn.) 1896-1905, 1902-07-27
SCIENTIFIC MISCELLANY.

In his experiments of the last four
years, NJ Ed Fouche has found no better
SSioW Vt3 Ior acetylene than aeetone This
and, at atmospheric pressure and a tenn
perature of So degrees, one volume alb
earef, II Voues OF aSetylene Water Is
explosive until the pressure Of dissolved
gas reaches lao pounds per square inch.
put at double this pressure the whole
mass can be detonated. For safety the
liqu1o IS absorbed by special porous bricks
carried In steel cylinders. These cylin-
GERS nave water capacity of .071 to 3.53
cubic feet, and half 100 times these vol
sure of 142 pounds. With incandescent
obb fainad ais light Of AS candle power is
per hour, which is about one-fifth the
volume per candle hour of the ordinary
compressed gas used in lighting cars.
The theory that solid may be cooled
to absolute zero by pressure is interest
ing least. Brinlworth and Martin have
attempted to prove it to be possible if
and suppose that compression is an in
flnltely strong and unyielding cylinder
would gradually force the molecules to-
geIner until they could not move. The
tremendous pressure necessary makes the
experiment impracticable unless at a low
starting temperature.
The thought Of space. compared with
which our immeasurable sidereal system
dwindles to point, is too overwhelming
to be dwelt upon, is one Of Herbert Spen-
GERS latest reflections. "Of late wears
the consciousness that without origin or
cause infinite space has ever existed, and
must ever exist, produces in me a feel
ing from which I shrink
A bright-colored card is now supplied
as a rest and invigorator for the eyes An
occasional glance at it is claimed to re-
fresh and invigorate weary eyes in an
effectual and scient<o manner.
Sleep is produced by the action of sub
stances generated in the body during
work, states DR.. J. H. Kellogg. Expert
bit would fall asleep when Injected with
the urinary secretion Of a tired laborer,
but that only spasm was produced by
The products of the body laboratory of
the fdler, instead or soothing poison and
irrttate, giving rise to sleeplessness.
stance are but other ba seea sub
potash, opium, alcohol chloroform or
ether is not of the most restful kind, and
sleep producer is within the reach of all
The person in health can get two or three
hours OF outdoor activity before going
to ped, and the partially disabled can
perform hard work by extending the
arms at full length for two minutes or
keeping all the muscles rigid for five
minutes. The bed-ridden invalid can get
the benefits of good exercise from many
movements Of head, limbs and trunk
The new type Of steamships Of Herr
J. Brohan, of Hamburg, is equipped with
four propellers. The vessel is flat-bot-
toned, with short keel in the center
and two false keels forward, and one
propeller is placed between the forward
keels, another just before the rudder
and the two others at the stern. 1t is
claimed that such a steamer 800 feet long
would make the trip from Havre to New
York in four days.
Day messages by wireless telegraphy
require much greater transmitting pow
er than night messages. Day signals ut
terly failed to reach Marconi at 700 miles,
although night message was successful
ly sent more than 1 $50 miles and a night
signal more than 1000 miles. 1t is sup
posed that sunshine exerts a diselectrify-
Ing influence upon the aerial wires.
Sunlight has been believed to contain
electromagnetic waves. A test by M
Charles NOrdmann at a height of $3.50
feet has proven that the sui emits no
such waves that can traverse a wire and
affect a coherer, or that the waves are
absorbed by the SUMS atmosphere or the
upper atmosphere of the earth.
That memories are laid down l.. strata