The Baltimore County union. [volume] (Towsontown, Md.) 1865-1909, 1904-12-10

The new s'physiotype" ia printed impression
from animal or vegetable life, and It is obtained
by pressing the subject upon q sheet of paper
and subsequently developing the hidden design
In strong permanent color by busting colored
powder over It. The design imprinted is strong
or light according to the amount Of natural
oils or moisture contained in the subject. The
development may be done at any time, even az
ter three months. and the process is specially
adapted for obtaining finger prints without
blackening the fingers. The printing can be
done upon ordinary paper. although the best re-
suits are given by paper specially prepared.
srs
The new gold extracting process Of Body, the
Belgian chemist, depends upon the addition of
sulphur instead Of it's elimination. Much gold is
combined with pyrites, from which separation
has been difficult, but the sulphuration by means
ofspecial salts at cherry red heat for relative
~ short time produces q disaggregation and
transforms the pyrites into product that can
be easily worked. In Italy, where the process ID
receiving much attention, ore is being treated
for $500 or $500 per ton. The process is Of fur
Their interest as confirming the theory that
placers are due to volcanic action. and that rich
sources Of combinedg gold in q volcanic matrix
are to be expected near placers Of free gold.
"a
III y tECdblc5 VI Lt3piFoGlOus 0oHuauLt ana
Reiset have concluded that life would be posi-
BILE If the nitrogen Of the atmosphere were re-
placed by hydrogen. New light has been thrown
on the subject by late experiments at Palermo
by DR.. Marcacci. who has found that animals
in such an atmosphere soon died. with symptoms
indicating that cold-due to the high heat con-
ductivity of the hydrogen-was the cause.
"a
An investigation by Konradi has shown that
the anthrax bacillus may survive in water for 3X
years and the typhoid bacillus for more than
500 days.
The use of electricity in agriculture is q sub
ject Of much study and experiment in France
and other European countries. In Belgium,
Guarini Is teaching that plant life Is an electro
cal phenomenon that can be regulated at will,
and he has shown that potted plant enclosed
in metallic cage dies in sunlight. because the
atmospheric electricity and electric radiations
from the sun are cut OF, but plant in absolute
darkness can produce fruit larger. finer and
more quickly than in the ordinary course, If
electric treatment be judicially applied. BY
high-tension continuous current dynamos, he
would apply the electrical treatment at will.
The future farmer. he contends, win be trained
electrician, and from board at the farm will
direct the equalization and growth of his pota-
toes. oabbaG6s and fss-rssfzss 49,
sSs
A local study of rural depopulation near
Paris has been made by DR.. A. F. Plicque. He
finds that the causes include sanitary ignorance
leading to high infant mortality, migration OF
young people to towns effects Of CONSUMPTION.
and alcoholism. His suggested remedy--one
that promises success in Belgium-is improved
primary and technical education, with special
efforts to cultivate love Of farm life.
80
A remarkable luminous meteor trail seen at
Madrid has been reported by J. A. Perez. It
continued visible from about 10 P. M. until mid
night, the shape gradually changing from an al
most closed curve with loop in 1t to an en-.
larged loop with a very faint detached portion
of the primary curve.
For several years record has been kept of
the wear of locomotive wheels on the Danish
state railways. The single drivers are found to
run better than four coupled, the latter better
than six-coupled, and in all cases wear is in
creased by fiimsiness of road.