Alma record. (Alma, Mich.) 1878-1928, 1918-02-28
TWO MORE SCIENCE
LECTURES GIVEN
Course of Scientific Lectures at
Alma College Meeting With
Good Favor.

Friday afternoon Prof. West gave
u talk before the General Science
Course at the college on What are
Foods?" After calling attention 70
the various classes of foods, he dis
cussed by means of charts the group
known as saccharides. The most i'm
portant member of this group is
sucrose OF ordinary sugar, which is
obtained principally from the sugar
beet and sugar cane.
The United States is fifth in the
world production of sugar, Germany
leading with about three -fourths
of the worlds supply. In light
of this fact it is little wonder
that at present We are experiencing a
sugar shortage. In speaking of foods
which are nourishing and those which
are less so, Prof. West said the old
idea that protein is the same is no
longer held as true. Ii is now recog-
nized that there is difference in pro-
tein so that now it is necessary to
consider the kind of protein as well as
the amount in food, for while some
proteins contain the properties neces-
sary 10 growth, others do not. He
called attention to the fact that milk
furnishes a protein of a certain char
acteristic which is necessary to bodily
development, hence is a necessary food
for children. In conclusion he en-
phasized the fact that quite often the
cheaper unadvertised foods are more
nutritious than those sold by well
advertised trade names.
On Tuesday DR.. Cornelius presented
the subject of Aircraft" discussing
both aeronautics and aviation. The
first part Of the lecture was devoted
tc the explanation Of the physical laws
and principles underlying the balloon
and airplane. These laws, although
complicated. were made clear by
means of experiments involving air
pressures, components OF force, in
cline planes, etc. BY means of a
large diagram OF Zeppelin which
was brought down in France few
months ago, he showed how these laws
are utilized in the construction and
control Of the dirigible balloon. Per
haps the most interesting feature of
the lecture was the clever pasteboard
airplane about two feet long which
DR.. Cornelius had made and suspended
from the ceiling. BY means of this he
showed how the physical laws pre-
viously explained are used in the case
OF the airplane in overcoming the
force due to gravity, thus making
possible flight in heavier-than-a
machine The airplane was made sc
that he could manipulate the planes
rudders and elevator by means OF
strings, and in this way he demon
straled in a concrete manner the part
these play in the climbing ability and
control of the machine. In consider
ing the construction Of the airplant
he called attention TO few of the fac
tors which enter into its construction
such as the necessary perfection o.
materials and Workmanship, indicat
ing the stupcndous and difficult tasl
our government has undertaken in at
tempting speedily to turn them out b,
the thousands. In conclusion he said
in light of the great degree of per
fection and safety that has been de
veloped in the airplane under wal
conditions, and in light Of the ire
menduous feats that are being don'
by aviators under the abnormal an'
trying conditions OF war. it is posi-
lively assured that the airplane vii
play an important part after the wa
in trans-oceanic as well as trans-con
tinental commerce. mail service an,
transportation.