Evening star., 1925-12-14
Q. How fast does an airplane as


cend?-H. II.
A. The climb of an airplane is ap-
proximately from 400 to 200 feet per
minute.
Q. Do many farm communities have
radios so that they can take advan-
tage OF the market reports, weather
reports and other information essen.
tial to their welfare?-D. A. S.
A. Progress in the use of radio for
the dissemination and reception of
agricultural information during the
last four years has kept pace with the
general development of this new
American industry. 1t is conserva.
lively estimated that there are now
about 375.000 radiophone receiving
sets on farms in the United States
which Is an increase of over 165 per
cent In one year.
Q. What are the duties of a dental
hygienist?-W. D. D.
A. The dental hygienist is permitted
only to remove stains and deposits
from the exposed surfaces of the
teeth. He may be employed In pub
lie institutions, in schools and in of.
fees of licensed dentists.
@. How is the city chosen for the
Olympic games?-D. H.
A. The international Olympic com.
mittee selects the city in which the
Olympic games will be held. In 1925
they are to be held in Amsterdam
Holland.
Q. Can a college have a professional
for a coach?-R. II. n.
A. A professional player may coach
a college team in any sport.
Q. Is the title of a copyrighted book
protected by the copyright registra
ton so that no one else can employ
it?-R. A. II.
A. Neither the author nor proprie
tor of literary work, whether copy
righted or not, has any property in its
name. The name is term of descrip
ton. which serves to identify the
work, but any other person can adop,
1t and apply 1t to any other book. pro
vided he does not use II as false
token. to induce the public to believe
that the thing to which II is applied is
the Identical thing which IL originally
designated. However, the name oi
a drama may become valid trade
name, in connection with the presenta
ton of dramatic compositions. So
per, or of magazine periodically is
sued.
@. Has Europe any trees that com
pare in size with the big trees of Cali
fornia?-G. G.
A. While there are none so large as
the California Sequoias, large speci
mems are found in sections of Russia
and in the forested parts Of Germany
and the Balkans
@. What is the difference in color
between the male and female sea gull:
*. z.
A. The Biological Survey says thai
there is practically no difference be-
tween the color of the male and fe-
made sea gull; in fact, in the case
of all ocean birds, it is hard to dis
tinguish the sexes. Young sea gulls
however, are gray.
@. VIII helium ever completely
take the place of hydrogen for in
fiating dirigibles Nv. T. T.
A. German scientists report that
they have discovered a new source
of helium, the non-inflammable gas
in monazite. Experiments show that
helium can be produced from the
mineral in paying quantities, 80 that
hydrogen may soon be discarded for
infiating dirigibles.
Q. What is known of Chief Rain
n-the-F Face, the Indian who killed
Gen. Custer?-W. V. w.
A Chief Rain-in- the Face was a
noted Sioux warrior and chief. He
was born near the forks of the
Cheyenne River about 1885. He died
at Standing Rock Reservation, n
Oak, September IA, 1905. He was a
FULL -blooded Hunkpapa. He was
many times on the warpath, and was
a leading participant in the Little
Big Horn fight. 1t is now generally
doubted that he killed Gen. Custer.