Freeland tribune. (Freeland, Pa.) 1888-1921, 1895-02-28
SCIENTIFIC AND INDUSTRIAL,

Arterial blood is red because it has
just been purified in the lungs.
The eye is not sensitive to cold be-
cause it is SO we'll supplied with blood
vessels.
The sea-nettle stings its prey to
death by means of poison secreted
in its tentacles.
A recent industrial innovation in
Switzerland is tho manufacture of
floor mosaics from wood pulp.
- The Board of Health of Tekonsha,
Mich, has ordered the dogs and cats
killed belonging to families afflicted
with diphtheria.
Action of sea water has SO loosened
the joints OF the aluminium torpedo
boat recently built for the French
Navy that it is in danger of falling to
pieces.
The Secretary of the North Caro-
lima Health Board cites many instances
of towns which had been almost
nninhabitable from malaria becoming
all right when pure water was intro
duced.
Professor Williams, OF Edinburgh,
after a period of investigation reports
that the danger of tuberculosis spread
ing among human beings is very much
greater from the milk than from the
flesh of COWS.
One of the balloons recently sent up
by French scientists with automatical-
ly registered thermometers and ba-
rometers reached q height Of ten miles,
when the thermometer registered 110
degrees below zero.
A German scientist says: "The eye
should never be rubbed save with the
elbow" meaning that it should never
be rubbed Mt all, for the reason that
this most delicate organ should al.
ways be handled with the utmost gen.
tleness.
The eyelids close inv oluntariiy when
the eye is threatened in order that
this organ may be protected. IL man
had to think to shut his eyes when
something was thrown at them he
would be too slow to save the eye
tIOiu INJURY.
To prevent the spreading of conta-
gious diseases through the telephone
the Paris Faculty of Medicine recon-
mends the use of a specially prepared
antiseptic paper. Diphtheria is said
to be one OF the complaints most east
ly propagated by telephone.
Iron, through its use for electrical
purposes, seems to have developed q
new quality, magnetic fatigue. In
tests made of transformers lately in
London to ascertain the open circuit
loss, it has been found that the loss
increased steadily for the first 200
days until it reached fairly constant
value of forty per cent. moro than at
starting.
The rapidity with which certain
species of insects move Is something
truly astonishing. The common house
fly is known to make 600 strokes per
second with his wings, and the dragon
fly 1900. In the case of the fly tho
600 stroks causes an advance move
ment of twenty-seven feet. These are
figures on ordinary fight, and it is
believed that the fly is capable of in
creasing both the strokes and advance
movement seven-fold.
1t is now we'll established, as re.
suit of the studies of LIE Conte, Hunt,
Spencer, A. Agassiz and others, that
the winds and ocean currents very
largely determine tho position and
e 81
atolls. In the case of plants, besides
the action of gravity and of light,
their shape is doubtless influenced by
currents of air. And these physical
causes have also potent influence in
determining the plantlike shape of
fixed animals, like spouges, polyps
and all animals when symmetry is ra-
data