THE MICHIGAN DA LY.

... .


INVENTION MAGNiFiES
SOUND 1EINIE


.:announ cement

Introducing to your notice a slender, lightfooted gentle-
man, Roy Hoyer by name, who as the bright and glorious lum-
inary of "Chin Chin and "Jack O'Lantern" has rightfully
proven his claim to the particular niche on the dancing and
singing musical comedy stage. A young man of unusual
growth in his profession and his name is assured as a permanent
fixture in the incandescent "Who's Who" of the future for all
time. ,No matter what section of the fabric of "Chin Chin" or
"Jack O'Lantern" you choose to pick up and examine, you
must always get back to Mr. Hoyer's dancing. He has the
gift of artistic dancing and does it with grace and skill.

VACUUM VALVES MAKE WATC
TICKING SOUND LIKE
BREAKERS
San Francisco, May 29.-- A man's
voice can be made as loud as the can-
non's roar; it can be heard 2 or 20
miles. The ticking of a watch can be
amplified until it sounds like breakers
on an ocean cliff.
Unlimited Magnification
"It's no trick at all to magnify sound
four or five million times, or indefi-
nitely," said Tom Lambert, a wireless
telephone engineer, today. "All that
is needful is to connect a number of
vacuum valves in multiple with a wire-
less receiving set, and the thing is
done. At the first receiving contact a
voice will be normal. Cut in one
vacuum valve and it is raised seven
times; thereafter it squares itself -
seven times seven to 49 for the next
vacuum valve, and 49 times 49 for the
next, and so on."
"I mean volume of sound; not pow-
er of transmission," explained Lam-
bert. "In a test recently, a phono-
graph was connected with an ampli-
fier at midnight, and' we were lifting
it up gradually to supply all San Fran-
cisco with song and amusement, when
the police urged us to desist.
Watch Heard Afar
"In the stadium at Golden Gate
Park the ticking of a watch was made
audible all over the grandstand while
an athletic meet was in progress. Cap-
tain Robert W. A. Brewer, an experi
menter, moved off 2,000 feet and spoke
quickly to his dog, and the dog could-
n't be held. A wireless station which
I am not permitted to name recently
received a telephoned message from
Europe, and through its amplifier star-
tled duck hunters in the marshes eight
miles away."~
Mr. Lambert exhibited one of the
vacuum valves. Its exterior resem-
'bled an ordinary 16-candle electric
light bulb. Through the glass, how-
'ever, could be seen electric winding
that was dissimilar. Around a fila-.
mgent was wound convolutions of wire
called a "grid." Above the grid was
an encircling metallic plate, The cur-
rent, it was explained, passed through
each in the order described. The in-
coming wireless signals travel down
the aerial wire to the tuning set and
,then to the vacuum valve, which is a
"detector," or receiver.
Use fo War ShIps
For practical purposes, the vacuum
have has its use as in warships, where
the wireless telephone speaks It mes-
fsage through a horn to several ofcers,
instead of to one using earpieces. It
can be availed of to address audiences.
The wireless telephone is wonder-
fully extending the field developed by
the wireless telegraph. Any wireless
telegraph receIving\set is equally good
for receiving telephoned messages. The
transmitting instruments, of course,
are different.
Every airplane possessed by Uncle
dam: and all United .States warships
are equipped with wireless telephone
apparatus. These sets on warships
are efficient at least 20 miles.
A C

bian soldiers who had been released
from vile prison camps in Bulgaria.
Col. Capps Saves Thousands
This work which was under-the di-
rection of Lieutenant-Colonel Edward
Capps, who in peace times is profess-
or of Greek at Princeton university,
doubtless resulted in saving thous-
ands of persons who might otherwise
have succumbed to starvation and ex-
posure.
The natives speak with unbounded,
gratitude of the help given them 12y
the Americans. They say the food
furnished by the American Red Cross
was the first substantial nourishment
they had in four years.
TEST TRUCK TIRES AND
WHEELS IN AUTO LID
Special tests are being made in the
automobile laboratory by Prof. W. T.
Fishleigh and Prof. John A. Van den
Broek to determine the relative resi-
lience and riding qualities of four dif-
ferent types of truck wheels and

tires.

Four Different Types

SPECIAL NOTE
Students wishing to learn stage dancing should
SIGN UP BEFORE MAY 27, as only those sign-
ing for the courses will be taught. A man with the
foundation for stage dancing which will be given him
in these courses will have much better chances in try-
outs for future Michigan Union Operas.
ENROLL AT NEW MICHIGAN UNION
BUILDING WITHOUT DELAY. Ask for Mr.
Shuter who is in charge of course.

OPEN DAY AND NIGHT 308 S. STATE ST.
SATISFACTION
Our trade with the people of Ann Arbor was
built through service that satisfies.
We can satisfy you.
J: P. ESCHELBAH
Home-killed meats, Home-made Sausage, Poultry, Hams and Bacon
202 East Huron St Telephone 821

The four which are being experi-
mented with are: wood wheels and
solid Goodrich tires; wood wheels and
Goodyear pneumatic cord tires; Se-
wall cushion wheels with specially
prepared tires; and Jaxon full floating
wheels with special tires.
The four types of wheels and, tires
are-subjected to four severe tests, dur-
ing which the resulting effects upon
the car are closely watched to deter-
mine which one is superior. These
have been continuing for some, time
and will not be completed for about
three weeks.
First Trial Easiest
The first trial, which the car passes
through, is perhaps the easiest. Loads
of different weights are placed in va-
rious positions on the wheels and ob-
servations are taken of the effect on
the deflection and permanent set of
the wheels.
In the second test, the wheels are
struck by a large swinging weight,
suspended from the ceiling. The pur-
pose of this is, to observe the impact
deflection and permane ft set. The
(practical use of this experiment is
seen by learning the type of wheel
which will best stand any side knocks
or bumps into the curbing.
Decision by Photograph
Obstacles of various sizes run over
at various speeds in the third tests.
Lights are placed on the front and
rear axles and the auto is then photo-
grap~hed ill the dark; laboratory. The
actio of the wheels and tires on the
body and axles pf the car are judged
in this test,
Finally, economy tests are run with
the various wheels on the road to
judge the fuel consumption of each
set. The car is set through the pce
at various speeds, with and without a
load, and then a comparison of the va-
rious results is niado to decide whioh
is run with the least expenditure of
gasoline.
Complete Tests
When the four parts-of the experI-I
ment are completed, the findings will
be tabulated and from these facts will
be drawn the conclusion as to which
set is the best. As far as can be
learned these tests are the most com-
plete that have been conducted by any
uliyersity or private concern.
Spcig apparatus and assistance
heyp l'eieggu;,4 to help in carrying
on the work.
leience has proved tbt pngper
advertising pays best. You can reach
all the students and faculty through
The Daily.-Adv.
MM-
'.illlllu

* itneYThAtre:.
ONLYII FRIDAY, MAY 30th


Now fora Hr

By Direction
MAJOR GENERAL W. G. HAAN
Commandant Camp Custer
10 INS. BAND-40 MUSICIANS-40

The Making of


You will find them here in
all the popular

ii

a Soldierl.

7

Braids, Sennets, Splits, Leghorns,
Vankoks, Panamas

Wadhams & Co.

UP TOWN

Two Stores

DOWN TOWN I
I


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Too ke

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RrIsiL

Leave Copy
at
QUary';and
The Debta

Ing ;_1
A DV/I

LOST

OST-A gold and platinum bar
set with pearls and sapphires.
tua to D. i., 718 Tappan Rd.
.ore

pin,
Re-
Re-


stiff
ter.

-Large loose leaf note book,'
Cever. Finder call C. C. Pot-
311 Thompson, Phone 1198-J.

LOST-Brown leather tobacco pouch,
Sunday; near Saunder's boat house.
Finder please call 281. Reward.
LOST-Love's Calculus. Finder please
return to address in book or call
Clark 1860-F2.
LOST-Pair of nose glasses in case
at Ferry field. Finder return to
Daily. Reward.
WON SALE
FOR SALE-Guitar and outfit, $8. Colt
Automatic and holster, $12. 407
Hill St.
FOR SAL-A vestpocket kodak in
perkoet,ondition. 713 Church St.

WlTAID
WANTED- Competent Cook wishes
position for coming year of school;
can take full charge; best of re-
ference. Write for appointment.
Mrs. J. Haller, 957 Greenwood Ave.
City.
WANTED-Four mode'rn light-house-
keeping rooms ,furnished C.all 984-M
in the forenoon.
FOR RENT
FOR RENT-For summer furnished
apartment; four rooms and sleeping
porch. 548 Church, rear. Phone
2513-W.
FOR RENT-Room, for men, for nest:
year. Steam heat, fine location. First
class in all respects. 727 Oakland.
MISCELLA1NEOUS
WILL gentleman who took hat from
Hill auditorium by mistake please
return it to 514 Thompson and re-
ceive his own in exchange.

' 1VAlla, Macedonia, May 29.-There
are sp any Americans in Kavalla,
the first city J4 the Balkans to become
a basis for An)LWgik Red Cross oper-
ations, that it has sope the aspects
of a real rAmerica city. rnep the
finest tobacco in the world-the bOF of
which is consumed in America-is
grown. Here the great American to-
bacco companies have expert JWad-
quarters.
Coveted by Bulgaria
For years Bulgaria has looked upon
Kavalla with a covetous eye. Al-
though defeated and subdued, she
lyoked hopefully to the peace confer-
ence at Paris to give her Kavalla
as a pop$, Kavalla is not a harbor
but BulgarJ#, which now has only the
shallow port 4 pedegatch, at the
mouth of the Gulf .of nos, is anxious
to get any outlet throu~g Macedonia
and the sea for her large ptput of
tobacco, wheat, Jivs ook, sil and
ttar of roses, and wO0l be utte ready
to spend any sum la 4 yel9ping ad
deepening the harbor.
Pillaged by Bulgarians
During the war the Bulgarians
adopted the same ruthless practices
they followed in all occupied territory.
They pillaged and destroyed. - They
made every effort to make the land un-
inhabitable, They cut down the trees
and carried ofi furniture and every-
thing made, of wood. They sacked the
homes and drove the Greek Inhabitants
out. When the Greek commisson of
the American Red Cross establised
relef posts here, after the armistice,
no section of the Balkans ever pre-
sented a more depressing picture of
misery and squalor. The Americans
found the inhabitants dying by the doz-
en from famine, exposure and typhus.
They established soup kitchens and
dispensaries and gave out tens of
thousands of American-made gar-
ments. They sent physicians, nurses
and medical supplies, distributed hun-
dreds of thousands of loaves of bread
made of American flour, established
shelters for the homeless women,and
children and cared for the hordes of
broken and dispirited Greek and Ser-

Summer

Staged by George Herbert in A Prologue and 3Acts
100 SOLDIERS 100-in the Cast
SONGS, DANCES, COMEDY GALORE
r es 50, 75, .00, $ .50-No war tax-Seats Friday


is

Price

Those who desire to buy the
1iig4het grade Coke at the lowy-
Ut ,priuge'fqr tis season. should
purchase 4t oflC, 4' 4'

Coke

C

Almost

Cone


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