The Baltimore County union. [volume] (Towsontown, Md.) 1865-1909, 1904-12-17

Correspondence BAltlnOrs Comfy Uajon.
sCIENUFIC MISCELLANY.
Observation-Disclosures MilkinR-Sugar as
Medicine--A Railway Power Meter
Our Albumen-Kite Surveys-Seeing IN
Other Light Than Ours-An Engineer
ing Relic.
The latest system Of transmitting pictures By
Wire-that of Prof. Korn OF Munich-claims
vacuum-lieht receiver as an important advance.
Two hollow cylinders, one at the transmitting
station and one at the receiving station, are TO-
tated spontaneously. The film carrying the pic
ture to be sent Is placed on the first cylinder,
and ray Of light concentrated from Nernst
lamp is passed through it to q selenium cell in
the interior. The fine pencil OF light describes
spiral Of short pitch, the light and shade Of
the picture causing the selenium cell to produce
variations in an electric current passing to the
receiver. The cylinder at the receiving end Is
covered with Photographic film, and pencil
Of light from vacuum lamp huctuating with
the variations Of the electric current describes
spiral registering the light and shade Of the
original picture. A photograph is transmitted
in half an hour, 500 words of writing 10 about an
hour.
Eucaine, the new local anaesthetic, is adapted
for many operations where chloroform cannot
be used on account Of heart weakness. It Is in
jected under the skin at the point Of incision.
Cutting may begin in a few moments without
pain, and more of the drug Is dropped In at in
tervals Of a few minutes as new portions Of It's
sue are exposed. recent successful operation
in London was continued an hour and half.
80
In the new Umschau electric milking process,
q rubber cap is placed over the cows udder, and
the milk is drawn by the suction of an electro
cally-driven pump. The method is claimed to
be both cleaner and quicker than hand milking.
1Ss
Sugar has been used for extreme emaciation
by ~. Toulouse. a French physician, with some
what unexpected results. It was given as an
addition to ordinary diet or milk diet, and In
quantities ranging from TX to 10 ounces per day,
The patients gained in weight from the begin
ming Of the treatment. The increase was often
more than the weight Of the sugar, and aver
aged 81 ounces per day, while 1t sometimes
reached pound or more. Some patients were
Is or 100 pounds heavier at the end Of few
months. No gastric fermentation or disorders
Of digestion were set up, as theory would lead
5pe to expect would be the case and sugar was
proven to have great value as a remedy for
emaciation, even with impaired digestion.
"a
The acceleremeter, designed for measuring
the power exerted in starting train and to in
dictate theproper speed for curves is the inven-
ton Of f. NJ. Gilley. a teacher of physics. 1t
consists essentially of two glass vessels connec-
ted by tube and containing liquid, such as
mercury and a red alcohol. AS the train starts,
the liquid passing from the forward glass to the
rear one-shown by suitable graduations-indi-
Gates the force exerted and In the same way the
instrument, when placed on its side, makes evil
dent the jerk or centrifugal force in rounding q
curve.
The amount Of albumen necessary in mans
food has been proven by French psychologists to
be much less than has been supposed. From 8
to ounces daily was once thought to be re-
quired, but later investigators found that 2K
and even TX ounces would suffice. In the new
experiments, continued for Ss days. the real
need was shown to be less than an ounce per
day.
A new Swiss watch contains tiny hard rubber
photograph plate which calls out the hours
loud enough to be heard 20 feet away. Senti-
ment can be added by having the words re-
corded on the plate in the tones of dear
friend-as those of mans wife or children.
-
surveying kite is an Englishman's novel APP
paratus for wartime use. It consists of an
aeroplane kite, to which is attached an auto
matte Photographic camera, and this kite can be
flown to a distance of four miles. In its out
ward passage and its Keeling in a complete pho
tographic map is made of the country traversed.
The cameras observations are absolutely accu-
rate and reliable, and they are superior to bal
loon observations in being less dangerous to
life and limb and less liable todiscovery.
-
Some years ago it was discovered that in the
ultraviolet portion of the Spectrum many ants
perceive two or three colors that are invinsible
to man. Recent observations show that one
species--Stenamma fulvam-sees only these
uitfU vioiet cof6rs and is blind to all ordinary
light. As these ants know only the light that
Affects the Photographic plate, it is suggested
that they may be conveniently studied under
orange or ruby glass, where they seem to them
selves to be in absolute darkness.
-
An interesting piece of ancient engineering Is
reported by H. Doat as still in use in Versailles.
1t is a cast-iron water main, which has q total
length of 15K miles, and which dates from 1884
to 1858. The pipes are of two sizes-2O and 12H
inches In diameter and TX inches and inch in
thickness. They are in lengths of 40 inches,
coupled by means Of fianges and bolts, and the
only repairs have consisted in replacing the bolts
at long intervals.
A church of solid coral is a curiosity of the
Isle Of Maize. This island, rising 5000 feet. is
the highest of the Seychelles group in the Indian
Ocean, and its buildings are all from square
blocks hewn from massive coral and glistening
like white marble.
A recent weighing of dandelion down has
shown that one million of the dainty parachute
are needed to make pound.
FNoH SALE. a