Evening star. [volume] (Washington, D.C.) 1854-1972, 1926-07-25

ANOALohN \ VksSs W.
A IR navigation, like every other
~ great discovery, has given rise
"A to a new body of knowledge
< \ and to a fresh application of
scientific principles and laws
t. unfamiliar problems in mechanics
\ "ound this discovery new questions
y, sit themselves From it additions
10 the common speech are made, and
d special technic of expression,
process and operation comes into
being. Schools are built about this
discovery, as about every other one
% equal practical significance, to give
lie technical training required for
is successful issue. Teachers are pre-
Jared to carry on in these schools,
suitable text books are written for
ZEN, and Libraries surround them for
%u extension OF the facilities of the
school themselves. Around the great
subject of air navigation the Ronald
.\eronautic Library has been pro
jected to extend substantial help in
s subject that Is rapidly spreading out
INTO the domain of common interest,
to offer opportunity to the thousands
OF young men who are ardent for
both the science and the art of this
Turing business of sailing the skies.
u the head of the Ronald Aeronautic
Library Is -. QSF. GudIluASIt AISA-
,enant colonel, United States Army,
retired, who has himself written upon
one or another aspect of air naviga-
lion and who besides has engaged
ether writer's of authoritative char
acter to open the subject still further
as its substantial advancement re-
uuires.
Not long ago Edward P. Warner,
formerly professor of aeronautical en-
cheering at Massachusetts Institute
of Technology, was appointed Assist
ant Secretary of the Navy for Aero
nautics. 1t is from such high source
hat the book in hand, "Aeronautics,"
comes to the reader and student.
Roughly stated, the book may be said
10 be study of the atmosphere from
a new point of view, nothing less than
that of a medium of transportation,
as the sea is such a medium, as the
land is. This science, "aeronautics,"
deals with the upholding of aircraft
by their own buoyanoy. a buoyancy
dependent upon air displacement by
the craft itself The foundation of
his subject therefore Is a knowledge
of this sustaining medium, a knowl-
edge of the air itself, in its compost
ton and it's properties and its be-
haViors under the existence of many
varying and diverse conditions, such
as density and altitude and humidity
and so on. This study begins with
an examination of standard air and
from this point passes to a considera-
ton of the various notifications and
effects that certain conditions impose
upon the regular air norm. The OBJ
iect Immediately to the fore in every
phase of this examination is that of
air navigation. Mathematical formu-
q nfNll
appear to the novice to lend a cryptic
air to parts of the study, but as mat
ter of fact. this is a book that can
be mastered by any intelligent reader,
by any student of good general ability.
1t is designed, naturally. for the stu
dent of this great subject. But,
nowadays, everybody has to be more
or. less of a student in order to keep
himself safe and sound in a whirling
world. And this uneasy everybody"
can gather from this clear and con-
else body of instruction a good gen
.eral idea of the atmosphere as a.
medium for the flying ships that sooner
or later he is destined to board for
speeding away into space itself.
ALLENBY OF ARMAGEDDoN. BY
Ramona Savage. Preface by
David Lloyd George. Indianapolis:
The Bobbs-Merrili Co.
HERE is the story of an unques-
\ tionabIy great soldier We
Americans know Field Marshal Wis.
count Allenby through his rescue of
Jerusalem in the Palestine campaign,
a spectacular campaign by virtue of
the traditions and sentiments clinging
to the city of Jesus. That story Is
told here in a finer detail than we
have hitherto heard. And beside 1t
are stories of the great soldier
stories that move out from the record
of any single man, becoming instead
part of the history of countries and
the world itself. Among these is that
one telling of Lord Allenby's part in
the victory in the Arras sector dur
ing the World War and more than
one record of his gallantry and daring
on other fronts in the great conflict.
The story goes back to service in
South Africa while the Boer War was
in progress, a service that spread be-
yond the war lines into the affairs of
civilian well being. All of these rec
ordS Of service to his country merge
the history of Allenby with the
larger history of England itself at
one or another crucial point in the
affairs Of Great Britain. And there
Is another side to the man that will
appeal to many as even greater than
the warrior side. Here is q man who
deeply loves certain things-animals
and the great green world around
him. A man who gave devoted care,
and taught intelligent and skillful
care, of the mounts belonging to him
and to his cavalry troops. Here is a
man who. in hours Of peace, planted
and tended and pruned, who studied
and extended his knowledge in re-
apeet to the plant life of any locality
where his general service to his coun-
try placed him. We like that-almost
more than his pure soldiery. A de-
scendent Of Oliver Cromwell, perhaps
he cannot always help his martial
nature and trend.
We have here at the hands Of a de.
voted captain on the Allenby staff an
-1aEthusiastic account of the sterling
military record of his chief, and the
story besides of the personal quail
tiles Of this fine Englishman in the
ways of peace.
GREAT MOMENTS IN SCIENCE.
BY Marion Florence Lansing, au-
thor of 1.-THE Wonder of Life etc.
. illustrated. New York: Double
day, Page & Co.
over since the beginning of things,
or, certainly, ever since any sort
Of record was made, there have been
these great moments in science"
marking the definite and substantial
progress of the world. At the back of
this book Is a very striking diagram
a timetable" of these great points in
scientific advance. At the head of
this chart or timetable, placed within
the prehistoric period, stands the word
fire. whose original means of pro.
ductien belongs to that distant day
and whose vital concern with progress