The Baltimore County union. [volume] (Towsontown, Md.) 1865-1909, 1909-08-14


Home Refrigeration-Produ Pow
er-Ozonized Water Supplies-B Birds as
Travellers = Bleaching by Ultra Violet
Lignt-The Sixth Sense-A City's Long
Leaps-A Blanketed Sea.
The new ice-making apparatus of Prof. An
di1ren, Of Paris, is designed for domestic use,
and IL 30 simplided- especially by the elimina-
tion of stufHng boxes to prevent Leakage it
is claimed to use only third as much power as
ammonia machines. while 1t requires no atten-
ton. Any power can be used-even hand
crank for the smallest machines. Two drums
are mounted on single hollow shaft, one end of
which terminates in the smaller drum while the
other end extends outside the larger drum to
carry pulley. In the larger drum pump is
attached to the shaft, with weight to keep it
upright. Ambiguous sulphurous acid circulates
in the two drums, being compressed by the
pump into liquid In the larger and evaporating
into gas as it escapes through tube into the
smaller. The expansion drum is cooled. abb
stracting heat from its surroundings. while the
heat of compression is radiated away from the
other drum. The expansion drum can be en-
closed in a refrigerator box, or placed in brine
with metal containers for forming ice, and ice
cream can be conveniently frozen in can in the
S~to4SN DNiuos Inc pump 10 u4OuutSu AZ Otib
which. like the acid, the sealed drums retain.
-
Producer-gas for power is used in the United
States by over 500 plants. aggregating 10000
horsepower, according to L. P. Totman. The
suction producer, using anthracite, retains fire
for several days. and includes the simple fur
mace in which the coal is partially burned while
other apparatus cleanses and cools the gas from
the imperfect combustion as it passes on to the
gas-engine. The system is claimed to be almost
automatic in operation. very economical and alb
solutely safe, while there is no smoke. and
smoke-stacks are not needed.
~
Electrically -produced ozone is used in Ger
many for purifying the drinking water of
the cities of Berlin, Paderborn and Wiesbaden.
The ozonizer, supported on hollow iron posts. is
an iron tank partly filled with water, with three
glass tubes passing vertically from the air out
side through tight joints in the bottom of the
tank to the space above the water. An alumni
mum cylinder partially fills each tube. cur
rent of 5000 volts is used, the aluminium form
ing the positive and the tank the negative, and
as air is passed through the tubes it is ozonized
by a silent discharge between the aluminium
and the glass. The ozone produced is led to
sterllizing towers. where 1t is brought into con-
tact with the water trickling down through
gravel. Nearly all bacteria are destroyed, in
Guiding all Of typhoid or cholera. and those that
remain are harmless. The disagreeable taste
and odor disappear as the ozonized water passes
througha masonry conduit on the way to the
consumer.
Some experiments by naturalists of East
Prussia have shown the possibility of tracing
the migrations of birds. and that such migrations
may extend to distances hitherto unsupported.
Many birds captured two years ago were re-
leased after being tagged with light foot rings
bearing record numbers and the dates. Some of
these marked birds have been reported from
far away, lake fowl. with ring dated July 28,
1907. having been shot in Tunis, while stork,
with ring dated July 5. 1907, was killed far
south of the equator. near Fort Jameson,
Rhodesia. That stork would travel from North
Germany to Southern Africa was a revelation.
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The uviol Tampa mercury vapor lamp. pro-
ducing abundant ultraviolet rays-is used for
bleaching linseed oil at Langelsheim. Germany.
Twenty lamps are immersed in ton of crude
oil at l070 E., air being introduced in fine bub-
bles, and the ultraviolet rays cause the oil to
absort one-twentieth of its weight of oxygen,
becoming clear and colorless. One horse power
hour of energy bleaches seven tons of oil.
-
The idea of sixth sense was considered at
the recent international Conference of the
Blind. at Manchester, England. Blind persons
are able to distinguish objects at some distance,
so as to avoid running against piece of furni-
ture or another person; and. while it was sug-
gested that this is simply a perception by very
acute ordinary senses Of a sight difference in
-
of the air, the Principal of Henshaw's Asylum
for the Blind regarded it as the operation of
distinct sense. In those who possess sight this
sense is unframed and unnoticed. When one of
our ordinary senses is lost, the others become
much more acute-without sight, for instance,
touch and hearing being greatly quickened--and
it is easy to understand that method of per-
ception. ordinarily very slight or absolute dor
mant, would be greatly developed when its use
should become necessary.
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Some strenuous Americans may be surprised
to note the intensity of the life that throbs in
the heart of the British Empire, as indicated by
the number Of fast trains that run without stop
between the metropolis and other leading cities.
On the roads radiating from London, not less
than 1871 trains daily make no stop in distances
of more than 100 miles. The Great Northern
Railway from London to Grantham has most
remarkable traffic in its IA trains day that run
105K miles in hour and 80 minutes, or at the
rate of SIS miles per hour. The London-Bristo
run 119 miles at 59.2 miles per hour-is the fast
est for long distance.
-
A vapor blanket 30 feet thick is found by
Prof. Frank H. Bigelow to cover the reservoir
at Reno, Nevada. Assuming that like invis-
able shield protects the Ealton Sea, IL is con-
cluded that this body may lose by evaporation
not more than or feet yearly. instead of the
feet hitherto expected.