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The San Francisco call. [volume] (San Francisco [Calif.]) 1895-1913, April 16, 1910, Image 3

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Persistent link: https://chroniclingamerica.loc.gov/lccn/sn85066387/1910-04-16/ed-1/seq-3/

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n-MIRKK weeks hro you read In the
Junior that there was to be an
aeroplane contest open to the
children of California.
Professor Jose Hidalgo, who Is of
fering a silver cup as a prize in one
of the entries, gave you some of his
reasons why the study of aeronautics
is important to every one, especially to
the young. Professor Hidalgo, with
many others, believes that by the tlmo
the present generation of juniors are
men and women, flying will be the
usual method of travel. So sure is Pro
fessor Hidalgo of this that he is per
sonally doing all In his power to in
crease an interest In, and an intelli
gent understanding of, this great prob
lem of flying, by offering a prize in
the contest that is to be held May 18,
19 and 20, 1910.
There Is not so very much time left
till then, so the boys and girls who are
awake to the important things that
are happening under their eyes had
Colorado Snow Flea
The observing Colorado miner can
not furnish you scientific names, yet
he will tell you at once that red snow
is caused by thp. snow flea. The snow
flea is very small. It would require
about 50 of them to equal their large
brother of the- east in size.
A person walking upright might
think the snow covered by a very fine
dust, but if your eyes are good and
you place your face within 18 or 20
luces -of the snow you can easily dis
cern the snow flea. Although so small
as to be almost imperceptible to the
naked eye, yit they are most active;" 1
jumping from 12 to 15 inches.
To the naked eye they appear to bo
dark brown in color, but under a good
microscope they would be found to
be a reddish brown. During cold
weather they stay under the bark of
trees, but when it is a nice, warm day
and the sun shines brightly you can
llnd them on the southern ami eastern
slopes of the mountains, where they
can get the direct rays of tho sun.
During the day they will ascend the
mountains, sometimes far above the
timber line. When the sun disappears
and it gets cold the snow flea freezes
to death. During the winter great
numbers will be thus frozen and their
dead bodies color tho snow.
Foot trails upon the south and east
aides of the mountains will, if it be a
hard winter, be colored, for when the
snow flea strikes a Jeep trail through
the snow millions upon millions of
them never get out, but porish from
tho cold during the night. Besides, a
man with a good sized foot might kill
from 1,000 to 10,000 of them every stop.
The snow flea favors the south and
east Bides of the mountains, and it is
there you will find the red snow. Tho
nonobservlng will say there is no such
thing as snow fleas, because they have
never seen them, but you can easily
prove to them, If you will look upon
the right kind of a day, that they do
exist in countless numbers.
Training the Left Hand
In Japan children are trained to uao
their hands and fingers more carefully
than anywhere else in the world. Japa
nese schoolchildren can do and mako
things with their hands that are impos
sible to western world children, with
the Imperfect manual training thoy re
ceive. Nearly all Japanese boys mid
girls can draw and write with both
hands at onca.
It Is all a matter of training and
practice. We could do Just the same
if wo had been taught how to,
This Is from two Latin words, "amto,"
both, and "dexter," right. The person
who is ambidextrous can use both hands
.is if they were right hands.
Try to write and draw with the left
hand, then with both hands at once.
In tho school* where the left hand is
trained a pupil is sent to the black,
board for his first lesson, Ho merely
makes lines at first, straight and curved
ones. With his right hand ho draws
i>i>rhap« curved lines parallel to one an
other. At the itanifl time with the left
he draws parallel straight lines. After
awhile he makes loops and what chil
dren learning to write call "pothooks."
At length such success is achieved that
Ilia pupil can with his left baud write
his name and with his right any word
hr> wi«hes. Th« process Is much the
name with drawing. — American Hoy.
better get busy. Yes, girls, too. There
is absolutely no reason why girls
should not enter models. In other
cities of the United States and Eu
A Russian's Discovery
A Russian chemist has produced a
valuable imitation rubber. His name is
Plinatus and he has been working three
years to gk a gum that looks exactly
like rubber and acts much like it. It is
patented in all civilized countries, and
is used for both solid and pneumatic
tires. But it will not serve for outer
tires. Cab owners in Paris experiment
ed 18 months with Plinatus rubber and
now a branch factory Is started there.
To the touch it Is identical with rub
ber and in appearance difficult to dis
tinguish; it can be made soft or leather
like, according to requirements. Its
tensile strength is 20 to 25 per cent less
than that of real rubber. It withstands
pressure to almost a higher degree than
rubber itself. Artificially Introduced
air bubbles give it an exceptionally
strong expanding 1 power. Prepared, as
soft rubber it withstands a pressure of
about 10 pounds per qcm. The hard
rubber up to 40 pounds per qcm. Light
has no influence upon it; further. It is
absolutely insoluble in benzine, eth-jr,
turpentine, petroleum, tetrachlor acid,
etc., and entirely indifferent to all min
eral and vegetable oils. It i« tho only
rubber, real or imitation, that will
withstand these oils, and at the janie
time not swell. The prime cost of pro
duction is from 6 to 8 cents per pound,
depending upon the uses for which it is
One of its main uses is for cab and
vehicle tires, and it is likely to work a
revolution in the trade. The inner tub.js
are filled with Plinatus rubber and pro
duces a tire of exceptional strength and
durability. The drivers of Plinatus rub
ber tires do not. know the meaning of
puncture or buratad tires and drive
with the same perfect ease and comfort
as the beat pneumatic tire. Compared
with solid tires, It h?s the enormous ud
vairtage In cost and further in durabil
ity and In elasticity, etc., hitherto only
connected with pneumatic tires.
Industry at Panama
Every two minutes a ton of coal is
burned up at Panama; every minute
twelve cartloads of rock and gravel
are torn from the earth; every hour
1,666 pounds of dynamite are exploded
in mountain and Jungle; ovory minute
$125 is spent for labor.
Ono hundred and thirty-two steam
engine* are shrieking and creaking: in
tho nine mile ribbon of the Culebra
cut, 10,000 shirtless men are sweating
and swearing', 1,250 flat earn are run*
nlngr. One hundred and six milea of
track split the gorge; a dozen sets of
rails, in width of 200 and 300 feet, are
hung in tiers one above the other. Six
ty-seven steam shovels are plunging: 20
ton 6coopa into the earth two and three
times a minute. Over 2,000,000 cubic
yards of earth are wrested from the
soil every SO days.
On the two sides of the Inferno squat
the twin peaks of gold and snow hills,
like a couple of applet whicli a school
boy has nearly bitten through.
Houghly, a hole, measuring' 97,615,000
cubic yards must be bored in the Pana
ma clay to make the canal a reality.
When tho French gave it up 81,500,000
cubic- yards had been excavated. The
Americans have added 42,000,000 cublu
yards to this totul. Picture a chasm
measuring 125 feet in every direction,
in which could bo burled 25 ordinary
three story houses, 40 feet in height,
in width and length. The equivalent
rope there have boon children's arco
piane contests before and In nearly all
of thorn there have been entries by
girls. In Paris not long- uko 25 girls
put in models.
Will the girls of California show
themselves behind 'the girls of other
nations? All over the world every
one agrees that American children aro
the brightest, most interesting for their
ages. Now California has a chance to
show what she can do. Will our state
show thnt this Intelligence 1« only, on
the top of the things? That it goes no
deeper than quick answers iind a sharp
rudeness: or will the opportunity that
the Pacific Aero club Is giving show
tho rest of the United States and
Europe that the children of America,
California especially, not ' only know
what Ifl going on in the world today,
but take an active interest in the prob
lems, and, one step further, have their
own ideas on how to solve them?
Study the following conditions and
then get busy.
The Junior will keep close watch on
the conditions and general rules, and
will publish any news of interest to
those entering the contest.
To Be Held May 18, 19, 20, 1910
The contest will be divided into,
eight classes of entries, as follows:
The contestants to be teams from
public, private and endowed school* 'ln
the state of California. Each team
shall consist of three pupils or IeBS,
from one school who are under the age
of 18.
This contest shall be for the Hidalgo
challenge cup. The names of the win
ning teams shall be engraved upon the
cup and will remain in the possession
of the school winning this trophy un
til won by another Bchool in a similar
conteßt. to be held at some future date.
All subsequent contests shall bo held
under the außpices of the Pacific aero
club, at such a place and such a time
as the directors of that club will select.
This cup, at all times, will be under
the general control of the Pacific aero
club of San Francisco. However, the
school winning it three times will be
entitled to the cup. (See general rules.)
Any boy or girl under the age of 18
not entered In a school team ia eligible
to outer this class, the prize to be the
Pacific aero club cup. (For instructions
Bee general rules.)
Peraons of any age residing at any
place in California are eligible to en
ter this class, also contestants in
classes ono and two, (See general
First prize — To the one making tho
greatest number of points a handsome
lovfng cup.
Second prize — To the one making the
second greatest number of points, a
cup. v
v Thlrd"prl«e — To the one making tbo
of such a chasm Is bored every day
along tho course of tho canal, tho ex
cavations approximating 2,000,000 cublo
feet dally.
\u25a0 \u25a0 \u25a0\u25a0
Regular Airship Route to Open
The first regular airship service will
bo established May 15. Trips will be
made from Munich, Bavaria to Starn
berg and to Oberaramergau. Tho Par-
Hnval typo will bo used.
A Farmer's Advice
"I hope I see you well," he said flu
ently to the old farmer leaning on hl»
"I hope you do," was the unexpected
answer, "but if you don't nee me well,
young man, put on specs." — Had Hen.
third greatest number of points A
For the best constructed nonflylnff
model of any well known type of a
successful aeroplane. Prize, a loving
Workmanship to count 50 per cent:
attention to detail to count 50 per cent.
The best man carrying glider. Prize,
a cup.
Workmanship to count 2. r i per cent;
attention to detail to count 2."> per cent:
novelty in design to count 50 per cent.
For the best model, flying or nonfly
lßn, made by the youngest exhibitor.
I'rize, tt medal.
For the best model, flying or nonfly
ing, made by a girl. Prize, a medal.
Any one of any age or place of res
idence is entitled to entry in this class.
Prize, cup.
Fintries in above class restricted to
shop bought models or toys. (See gen
eral rules.)
All models entered in the above
classes must, be made by the individual
entrant or under his or her direction
as distinguished from "shop bought."
f;i:\i',H.\l, RULF.S
All flying contests will be judged 'as
Seventy points to the model making
the longest flight, with certain dis
counts specified later, and 10 points for
unusual steadiness nnd stability of
flight; an additional 10 points for con-
Hpfcuous excellency- in workmanship,
and a further 10 points for any novel
feature in design -wr construction.
Each contestant will be allowed three
trials, the longest to count.
The longest flight shall be in accord
ance with the following scheme: A
straight line will be drawn from the
edge of the launching platform to the
opposite side of the racing arena In
the intended direction 'of the flight.
All models are intended to fly straight
along the line, but those which take
\u25a0a course either from the right or left
will be credited with a distance marked
by a straight line drawn from the point
of landing of £he model at right angles
to the central line. The distance of the
point of Intersection of these lines from
the starting point to count.
For the longest flight so measured
an allowance of 70 points will be given,
and for any shorter flight there will be
awarded points bearing the same pro
portion to 70 as the length of "that
flight bears to the longest flight re
corded by the winner.
If any model touches a person or
object while in flight it shall be called
"no flight,", and the contestunt shall
-be allowed another. trial.
Any model touching the floor within
10 feet of the launching platform shall
also be called "no flight." \u25a0-"-:
Three such failures will disqualify a
The tryouts will be held^at the Ar
mory hall in Van Ness avenue, between
California and Pine streets. The con
testants will be notified of the dates
of these tryouts later.
The arrangement of the contest into
different .classes, while devolving con
siderable extra labor on tho committee,
is deemed necessary in order that those
under the age of 18 (classes No. 1 and
No. 2) will not have to compete against
older persons.
The rules, however, allow of entry
also In class No. 3 in competition with
their eldero.
A contestant may secure permission
from the committee to enter any num
ber of models, provided they are not of
the same construction.
For any further Information that you
may desiro you may write to any of 4he
following committeemen, or call at tho
club rooms:
Clevo T. Shaffer (chairman), 802
Holyoke street; A. 8. Pare 10 Third
street: If. A. Chandler, 165 Third
street; Charles Bradley, Crocker Na
tional bank; Prof. Josa Hidalgo, West
bank building.
Signed Pacific Aero club. Pacific
building, Fourth and Market streets;
H. A. Chandler, -secretary.
.. »
All That Was Left
A negro died without medical at*
tendance and the coroner went to In
"Did Samuel Williams live here?" he
asked tho weeping woman who opened
the door.
"Yasauh," she replied between sobs.
"I want to see the remulna."
"I is de remains," she answered,
proudly. — Everybody's Magazine,
"I thought I would die laughing," said
John to Dot, "when at the zoo the other
day a little boy called ono of the ani
mals a seraph. Of course, he meant a
giraffe; but the fun of it was that it
wasn't a jjiiiiffo — it wua a camomile."

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