El Paso herald. (El Paso, Tex.) 1901-1931, 1917-03-08

| they are not worthy Of consideration
| because they are based upon conditions
| that are impossible to obtain.
"A cumulus cloud indicates a rising
| column of moisture carrying warm air,
| but il is untrue that the air immedi-
ately surrounding the cloud is de-
scending, and the statement that lust
like a fountain, the cold air 0ours
wrong Air. in general. follows the
laws Of fluids, and 1t is suggested
that you notice whether the water in a
basin near the bottom and adjacent to
the current flowing through the waste.
flows upward. contrary to the direction
of flow of the water through the hole
Notice that the water flows inward
toward the center near the surface OF
the water. Remember that the sur
face of the water in the basin should
be compared with the air near the sur
face Of the ground.
''The eighth paragraph Is the cause
OF this letter. The family and friends
of an aviator have enough cause for
worry without having additional wOr-
ries caused by incorrect pseudO-scien-
tific articles. and in order that you
may relieve the needless anxiety OF our
families and friends that your incor-
rect article has caused. the aviators Of
this squadron desire that this commu-
nication be published. That my state
n1ent may be given due weight. ] de-
sire to call attention 10 the fact that
it is based not only uDon the study
required in order TO obtain two de-
grees from one of our greatest univer-
stiles. but also upon hundreds of thou
sands Of miles of aeroplane flying upon
both coasts, along the border. and in
Mexico.
I also desire TO call your attention
70 the fact that if the aeroplane is a
few thousand feet above the ground,
the mere fact that il is upside down is
no cause for worry, If the pilot is prop
erly trained. and that the pilots OF
this squadron regard it as an ordinary
part of their training to throw their
machine into all positions that Il can
be placed. and that IT is not regarded
as d dangerous thing to loop the loop,
fall sidewise, etc.
Your ninth paragraph contains the
statement The air has been sucked
away from this spot, and the rarified
air which remains cannot carry the ma
chine How was the air suck away "
Why does not the adjacent air flow in
beneath this lighter column and start
there is a hole or partial vacuum
present in the air above 4 break in
the clouds. II may be of interest 10
know that If there was 4 vacuum pres
ent in the atmosphere, Ii would be inn
possible for the modern aerODlane TO
fly fast enough 10 enter this hole
for according TO the laws Of fluid flow.
the surrounding air would be flowing
into the hole al 4 velocity OF about
$50 miles per hour. There would also
be loud report similar 10 4 thunder
clap. WREN the air rushing from all
sides met at the center If you wish 70
test this, open the muffler cut-out on
your automobile and listen to the noise
made by the air when ii rushes in To
fill the space left empty when the ex-
haust gases kick the air away from
the end OF the exhaust pipe. Also
listen to the crack caused by the air
by the passage OF a high powered
bullet
The tenth paragraph needs no
comment, The eleventh paragraph IS
fairly accurate. The last paragraph Is
partly accurate. i-~smuch as ~ ~ir
on the leeward side OF mountain
flows downward-it is incorrect De-
cause the air either follows the con-
tour OF the downslope. or II the hori-
zontal wind velocity IS sufficient. an
the surface viii be flowing uD the
slope until Il meets the air passing
over the to-, which IL Joins. II you
wish to visualize this. notice 4 stream
an indentation in the shore. and the
resultant eddy. In this case the axis
OF rotation is vertical, in the case o.
the air passing over q hill the axis is
horizontal
AS Fl Paso Will probably be the
permanent station OF this organization,
and as a great many of your citizens
have shown an interest in our work,
and as we believe that this interest is
for the betterment of the service, we
will be glad TO offer our services in
case we may be able to give you any
information in regard to aviation arti-
cles. and in case questions arise that
we are unable to answer. we will DO
only too glad to demonstrate the an
swer BY actual trial and test.
We think that The Herald should
not give wide circulation 10 such ar