The Baltimore County union. [volume] (Towsontown, Md.) 1865-1909, 1904-10-08

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which has been 90 dangerous to workers under
increased air pressure. has added much to the
possibilities Of engineering. By experiments on
animals Prof. Leonard BILL, r. r. g., has proven
that the blood under pressure dissolves con-
siderable and constantly increasing amount Of
atmospheric gasses, ana that these tend to
escape rapidly, with kind Of frothing or effer-
vescence, when the pressure Is removed. This
produces varying symptoms, often serious or
fatal The remedy Is gradual decomposition In
special diving bell or caissons and while diving
operations have been hitherto risky and seldom
attempted beyond 100 feet. this apparatus makes
It possible and fairly safe TO carry on work down
to depths Of 200 feet.
The visibility Of IS "canaIs" on Mars is traced
By Mr.. Percival Lowell for different periods
from 375 drawings. The canals are supposed to
represent vegetation, and they seem to follow
the water, which is believed to be almost entire
~ locked up in the polar snowcaps In winter and
to be released by the melting of the snow and
ice at the summer solstice. The water after Its
release seems to have remarkably steady flow
toward the equator Of 50 miles per day. The
spherical form or the planet indicates condi-
ton Of fluid equilibrium, and this in itself is held
to be strong evidence that the water channels
are artificial.
In recent operation by DR.. Leraux, of Paris,
IS foreign bodies including coffee spoons, were
taken from the stomach Of young man Of 20.
In an earlier operation in Odessa 81 objects, such
as e soupspoon and teaspoon. were taken from
woman Of 80. while the stomach of q Balti-
more young man had carried for four days 20s
metallic OBJECTS, including ~ dog chains ana $50
nails. with 1o70 grains Of broken glass.
sss
One Of New Zealand's most singular curiosities
is the so-called vegetable caterpillar. Noticing
recent specimen, W. +. Kirby. the British
naturalist, states that several large caterpilars
Of the families Cossidae and Hepialidae are
known to be infested by various parasitic fungi
Of the genus Cordyceps. Fries. which convert
the whole Of the caterpillar into a woody sub
stance. and then sprout from it to length of
several inches. The infested larvae, usually
growing to about four inches. live like others
until ready to assume the pupa state. Then
they bury themselves In the ground. die. and the
fungus sprouts upward, usually from the neck
Of the caterpillar. sometimes acquiring the
length Of nearly foot, and rising up from the
ground. Very rarely two. or even three, Of
these flaments may sprout from single cater
pillar. The natives eat the plants, which have
the flavor of nut. and also burn them for use
as coloring matter for their tattooing.
A Kansas dental instructor points out that the
teeth. the most indestructible of all animal tbs
sues, have been strangely neglected as means
of Identifying decomposed bodies. They have
many peculiarities, and dentists could easily
keep records showing the size and width Of the
arch; the size, shape and color Of the teeth
missing or altered teeth; kind Of filings and To-
cation gold crowns, bridges or artificial plates
and other features Such records would be Of
special value to insurance companies, often saw
ing tedious and expensive litigation.
a~s
When the transformation of cities by electric
power and light is completed, we may expect
the air to be practically as pure as that of the
country. It is estimated that the carbonic acid
exhaled yearly by the people Of New York city
is about 10000 tons, but that this is less than
three per cent. Of that from fuel combustion.
ssa
Useful records Of the joltings Of different rail-
way cars have been obtained by F. Omori, the
Japanese earthquake student, by means of the
seIsmograph, or earthquake recorder.
81
The light cures Of Finsen and others call for
blue blood, as blood of the ordinary color alb
serbs the violet rays and limits the curative ac-
ton to the surface Of the body. In the novel
~
purpose has been to overcome the difiiculty by
artificial coloration. Methylene blue. with CO.
caine to make the effect lasting. was tried by
DR.. Oder, and rabbits injected with the solution
acquired blue color which remained for hours.
The tissues and even the bones became so per-
meable to the light OF an arc lamp that photo
graphic piate D0nInu the animal was impressed
in twenty seconds. Testing the light treatment
on animals colored blue, an immense furuncle
of the bone OF dog was cured in three sittings
Of half an hour each, and other results were had
that indicate that the new field in therapeutics
will prove an important one.
"a
German test discovered not long ago is
claimed to distinguish human blood with abso-
Lutte certainty from the blood stains Of dogs,
cats, fowls and other animals. Applying the
test to an Egyptian mummy 5000 years old and
the remains of q pre-Christian Greek. Prof.
Hausemann, of Berlin, has obtained the same
results as with recent blood, and he finds, more
over, that the blood of the anthropoid apes gives
precisely the reaction Of that OF mankind of all
ages.
Ferro-concrete railway sleepers now being
tested In France are SO feet long, inches wide
and tx inches deep, and weigh 2Sl pounds each.
The reinforcement of steel bars weighs 10 lbs.
10 1905 ROA
and it is thought that under the most unfavora-
BILE circumstances the cost will be less than
twice that Of oak, while the life will be four or
five times as long.
&c
Experiments by 7. E. Doubt justify the con-
clusion that increasing the intensity of light
10000 times does not alter its velocity by as
much as 2 feet per second.
Next Meeting in December.-It has been
decided to hold the next meeting of the Mary
land State Horticultural Society at the Agricul-
tural College, College Park. December 2Sth and
10Th. Prizes, ranging from 81 to S., are offer
ed for the different varieties Of apples, pears,
grapes and other fruits; also for vegetables,
nuts, flowers and potted plants, greenhouse to-
matoes, lettuce, etc. The aggregate Of the
prizes is over 500. 1t is desired to make the
exhibit the largest and best ever shown in
Maryland. The following directions are given
to those intending to be exhibitors:
Fruit intended for exhibition should be
picked as soon as it is well grown, without |
waiting for evidences of full growth to appear.
Pack tightly in box, wrapping each fruit in
tissue or other suitable paper; handle with the
greatest care possible to avoid bruising. Ship |
prepaid to the Baltimore Refrigerating Com
pany, 408 South Eutaw street, Baltimore. |
Mark for Maryland State Horticultural Society. |
Send bill for transportation to Prof. J. B. s.
Norton, secretary, College Park. Label each
variety and send list Of what is sent to Prof.
T. B. Symons, chairman exhibit committee,
College Park. Exhibits that do not require |
cold storage can be shipped to State Horticul-
tural Society, College Park, previous to the |
time of meeting
Worlds Fair Excursions.
Low-rate ten-day coach excursions via Penn |