The Prince George's enquirer and southern Maryland advertiser. (Upper Marlborough, Md.) 1882-1925, 1896-11-06
THE PROPULSION OF BAL
LOOMS.

In attempting to propel a balloon of
the usual shape, the great difficulty
met with is that Immediately it begins
to move against the wind the big bag
of gas is forced out of shape, and in
proportion to the propelling power ap-
piled threatens to engulf the car and
its tenants in its folds or to suffocate
them with the gas, which is caused to
escape by the alteration of its capacity
with change Of shape. The other diff
Guilty is the construction of a powerful
enough, and yet light, motor, which
does hot require fire to work it.
Though many attempts have been
made, advance has been very slow.
The French, who have persistently
stuck to the balloon from a national
pride in its invention, and who have
done most for its improvement, have
made some notable steps in the matter
of balloon propulsion. Thus, toward
the close of the Franco German war,
NJ. Dupuy de LONE, naval builder,
constructed balloon with rudder
and screw driven by the passengers.
1t was found that velocity apart from
that of the air current, of about SIX
miles an hour, could be obtained.
Considerably better results have
been obtained by Messrs. Krebs and
Renard with their cigar-shaped bal
loon, inflated with hydrogen and pro-
PEELED by an electro motor driven by
storage batteries. They have succeed
ed in travelling a little more than
twelve miles an hour in fair weather,
and in steering in any direction, even
returning exactly to their starting
point; but in windy weather the APP
paratus has not been tried To brave
any moderately strong wind, the ma
chine would require to travel some
thing like fifty miles an hour, but these
French officers do not expect to attain
a speed Of more than twenty-five miles
an hour under the most favorable cir
cumstances. In the option of Maxim,
this dirgible balloon is as near perfec-
tion as is ever likely to be attained
by machine depending on AERIAL fio-
tation.
The empire of the air is not to be
worn by balloons. They have too
many imperfections and limitations,
and accordingly, this at first sight
hopeful path must be abandoned for
the more difficult one of mechanical
flying. The birds must be initiated
as far as human powers, aided by suit
able mechanical devices to make up
for the natural DEFICIENCIES IF man, can
90. The efforts of those interested IN
the matter have been of kie mainly
directed to flying machin ), which
though they must necessarily be
heavier than the air, yet may find in
their very weigh and intertia means
for battling successfully with the vari-
able air currents. The subject has
been approached in many directions
and much encouragement has been
gained as the difficulties have been
more thoroughly understood.
WORTHY YOUR CONFIDENCE
The success of Hoods Sarsaparilla in
conquering scrofnla in whatever way it
may manifest itself is vouched for by
thousands who were severely afflicted
by this prevalent disease, but who now
rejoice over a permanent cure by
Hoods Sarsaparilla. Scrofula may ap-
pear as humor, or it may attack the
glands of the neck, or break out in
dreadful running sores on the body or
limbs. Attacking the mucous men,
brane, it may develop into catarrh or
lodging in the lungs lead to consump-
tion. Come as it may, a faithful course
of treatment with Hoods Sarsaparilla
will overcome it, for working upon the
foundation of all disease, impure blood,
the system is clarified and vitalized,
and vigor, strength and health restored
to the body.