Evening star., 1925-11-04

u. What are some of the rules to
follow for burning coke?-C. A. r.
A. Carry a deep bed of fuel-a bed
about 18 inches thick gives best re-
suits. Use very little draft after the
fire is started and keep it always
under control. Do not stir the fuel.
Clean the fire in the morning. If pos
Sible. Use sized coke-one- half to two
inches for furnaces, boilers and
stoves; one-half to four inches for
open CRATES. Do not allow ashes to
accumulate in the ash pit.
Q. Do men or women think more
quickly when driving an automobile
and an emergency arises?-C. S.
A. According to tests recently made
by DR.. F. A. Moss of George Wash
ington University and H. II. Allen of
the United States Bureau Of Stand
ards in which 25 men and 10 women
were put through a series Of tests it
was found that the average reaction
time OF the women was 0.56 seconds
and that OF the men 0.59 seconds, and
the average variability of the women
OH seconds and that Of the men 0.22
seconds.
@. What American birds can be
kept in cages?-T.Y Mex.
A. The Biological Survey says that
no native birds are allowed to be
kept in captivity, although imported
species are allowed to be confined In
aviaries.
@. How many flights has the Los
Angeles made?-A. NJ.
A. 1t has made about 80 fights
with its American crew.
Q. How many negroes are there in
m
A. The Negro Yearbook says that
there are 17.777,000 members Of the
colored race on this continent.
O. VIII a tank float better filed
with air or II 1t contains vacuum?
r. s.
A. The tank will float better with a
vacuum inside 1t, provided it does not
leak or implode. The vacuum sub
jects it to an added outside pressure
of 147 pounds per square inch. and
reduces its weight about 1-13 pound
per cubic foot.
Q. From what kinds Of metal was
the framework Of the Shenandoah
made?-B. B. B.
A. 1t was of duralumin, a compo-
sition of aluminium. copper and man.
ganese, which has tensile strength
Of mild steel and is only one-third of
its weight.
Q. In what States are Christmas
trees grown?-H. f.
A. The New England States and
New York are doubtless the leading
States in Christmas tree production.
Spruce. frs and pines are classed as
Christmas trees. The Norway spruce
is perhaps the favorite.
Q. How many dentists belong to
the American Dental Association
Nick. B. r.
A. The association is made up of
group Of nearly 10000 dentists.
@. What will keep cider sweet
J. d.
A. Apple cider may be kept from
becoming hard by adding one-tenth
of / per cent of benzoate of soda. If
of soda content must be declared upon
the label.
0. Is 1t warmer to wear two rather
thin undergarments in the Winter or
one thick one?-R- 7.
A Two thin garments are warmer
than one thick one, because the air
between them is a poor conductor of
heat.
Q. When were the clipper ships
Dreadnought, Red Jacket and Comet
built?-H. A. NJ.
A. The Dreadnought was built in
1853, the Red Jacket in 1853-54 and
the Comet in 1851.
Q. Give some information concern
| ing Canadian foreign trade.-C. r. T.
A. Canada's foreign trade now
places her among the first six nations
of the world, a place which she has
won not only by the export Of her vast
annual grain crops, but also as a
manufacturing nation. In the year
ending August 81, 1925. the exports
of the Dominion reached a value OF
$1.130.753,557.
Q. Is 1t true that wheat turns to
| cheat *. D. H.
| A. Cheat. or bronze grass. the trou-
| blesome weed found in wheat fields
| is a perennial grass. The seeds re-
| tain their vitality for long time and
! frequently appear in grain fields
| where from some cause the cereal