New Mexico state record. (Santa Fe, N.M.) 1914-19??, 1920-04-30

$780,
ed in some part of the mine to which
they have r~etreated in order to protect
themselves from the fumes of a fire
these, too, may be rescued through
prompt location.
When the bureau first began its ex-
periments with the geOphone, 1t was
questionable whether the instrument
could hear sounds far enough away to
make it practicable. The experiment.
show that sounds can be detected
through the earth a distance of 1.5O0
feet in the mined-Out area in a coal
mine, through solid coal 1900 feet, and
through solid rock half a mile.
The geophone, according to the bu-
reau of mines. is also of great practi-
cal value in metal mines where two
tunnels have to be connected. At times,
in spite of as correct surveying rs is
possible, the two tunnel headings fail
TO come together. Just recently hui
reau of mines engineers were in a mine
where the two ends Of the tunnel
failed to meet and the geophones. To-
eating the error, showed the miners
the right direction.
Observations with the %geOphOne
have also been made mt mines which
were on fire, where IL was found that
the fire made noise enough to be leard
some distance, either because of its
drawing air or the breaking off of bits
of coal and slate. The ge0phOne by
thus locating the fire gives information
ment to erect fire-stopping devices in
the proper places or to make q direct
attack on the fire.
Detects Leaks in Mains.
1t is also the custom in some mining
localities to drill a hole from the sur
face into II mine to carry pipe lines or
cables. Oftentimes these drill holes do
not go to the right places and 1t is with
considerable difficulty and expense
that tunnels are driven to meet the
drill hole. With the aid of the geo
phone the drills can be guided better.
especially since drilling can be detect
ed for nearly a mile.
Very satisfactory results have been
obtained in attempts made to locate
leaks in water mains. The water cir
culating in the ordinary city main can
be heard with the geophOnes when they
are placed on the surface, ten to twelve
feet above the pipe. In the business
district of Pittsburgh n leak was To-
Gated within n few minutes, although
the water department had been trying
to find il for two weeks.
The announcement that President
Wilson has taken a home for the sum-
mer at Woods Hole, a coast village In
Massachusetts. is "A reminder that
the government has never taken
vidlng a dwelling place outside
the national capital for its presidents.
although the subject has frequently
been approached. In this respect the
United States Is behind the other great
countries Of the world. Most rulers,
as is well known, have the privilege
of choosing from three TO six or more
places of residence. No n has ever
suggested that this country should 90
to such m extravaganza, but a great
many persons do feel and SO express
themselves that the United States
should provide n summer home for the
president away from the sea Of gov
eminent.
The chief argument perhaps In
favor of the government buying an
out-of-town home for the chief eyecu-
tive Is that Washington is not n de-
sirable place of residence during the
summer. With few exceptions, and
President Wilson Is one of these OK.
ceptions. presidents have always found
II necessary to get away from the cap.
ital during the summer months.
President Wilson. through force of
circumstances, has been compelled to
spend practically the whole of every
summer during the sever years he has
been In office In the White House.
What he would have done had not the
war tied him down here no one would
venture 10 say. All that Is 10 be said
Is that he had stuck To his job regard.
less Of the weather and some people
are Of the opinion that he is now pay
ing for this devotion TO duty.
Little Time for Rest.
In the earlier part of his admits
tration President Wilson made some
effort to break away from Washing
ton during the summers. hut he never
really succeeded. In the summer ot
1916 he took n summe home over on
the coast Of New Jersey and was there
n short time. He also leased n sum
mer home In New Hampshire for on.
summer aud was able 10 spend nj.
most two months M there. but public
business forced his return 10 the
White House. The public will natur.
ally wish him a rcstful summer nj
Woods Hole.
Since Cleveland's time every presi-
dent has had the yacht Mayflower ~
his disposal and when he has been
compelled TO remain in Washington
during the heated season has been
able to find relief IN short excursions
down the Potomac and out into
Chesapeake hay. President Wilson
has made less use " the yacht than
either President Taft or President
Roosevelt.
The item Of expense which n presi-
dent must incur In providing his own
summer home is no small matter. Con
gress has never ventured to make an
appropriation for such accommodn-
ton.
Truth From Young Life.
Tommy" said the teacher. "can