The Saint Paul globe. (St. Paul, Minn.) 1896-1905, 1897-11-07

naming nine days for the actual ex-
pertinent were divided into three periods of
three days each. The first three DAYS were
devoted to study of the relationship be-
tween food and thought They were spent
py the subject in severe mental labor lIa
worked eight hours q day at his table solv-
ing difficult mathematical problems and sludv-
ing German work on physics
The second period of three DAYS was sueut
IN absolute rest. The subject sat or reclHad
during the day, and slept as usual at NIGHT
The third three days We're devoted to severe
ana eNhausting muscular exercise. with
pulley and weight continued eight hours
each day. For future experiments % sta
uonary bicycle, which may be worked by
the subject in the chamber. has been OBJ
famed With this q study of the proper die
tarles for bicycle riders may be made.
mus were represented i'm these three peri
ods the thinking man, the resting man and
the athlete or manual labJrcr. The amount
or material actually retained 10y the subjects
system was accurately estimated by subtract
ing the amount OF waste matter-eveu that
IN his breath and persprati0u-frOm the to-
tai food previously eaten. Thus the actual
work Of the stomach during each of the three
periods was accurately determined
BRAIN WORKERS NEED LEAST FOOD.
Comparison Of the periods of brain work
and rest disclosed the fact that the human
engine burned virtually the same amount of
fuel during each period. Strange to relate
the indication was that brain work does not
burn up any more of the body or of the food
than does absolute rest. On the other hand
q very much greater PROPORTION of food was
used by the system during muscular exercise
than during either brain work or absolute
rest. Indeed. the fuel afforded during the
third period was scarce enough, and the sub
1ect,s body digested almost seven pounds of
itself.
This experiment indicated very clearly that
brain workers and men who take very it'll.
exercise require much less bulk of food than
men who use their muscles. by drawing the
INES closer 1t may in the future be learned
which particular food ingredients are most
necessary to brain workers and which ~
body workers. Different kinds of foods must
be given, and their comparative effects stud
led very closely during long periods of ex-
Fermentation. The income and OuteO of
phosphorus, sulphur and other ingredients
as we'll as of nitrogen and carbon. can be ac-
curately measured.
JUST WHAT FOOD EACH PERSON RE-
QIlRES.
When this is accomplished there may be
given to the world some valuable inforna-
ton as TO the amount and quality of food
appropriate fer people of different classes
under varying circumstances. Experiments
so far indicate that our professional and
business men, who represent the thinkers
and those of sedentary habits. commonly
eat much more than they absolutely uD.a.
If this is true, they are fortunate I'm being
able to keep body and soul together uI O.
less expenditure Of funds than is required uL
lebcrers.
Through these same experiments are being
which brain workers and men of other classes
commonly take into their lungs The amount
Of air which could be supplied TO- tnc subject
of the experiments noted was comparatively
small-due, of course, 90 his limited apart
ment. The carbouic acid gas which was
bound to accumulate i'm his air-tight chamber
from time to time was much greater ,.an
that calculated To make common ItiuS
room uncomfortable and unhealthy. Gpr the
subject remained comfortable during almost
the entire period of his e. uduemeut especially
tTTfu Na eric III of
difference between the air fed into am air-
tight cabinet and that which fills AN ordinary
room is that be former was without moist
ure during the experiment. The theory,
therefore, arises that the discomfort which
people suffer iu badly ventilated rooms is
probably due to moisture i'm the air. or at
least to causes other than cdrDonic acid gas,
not generally understood.
MUSCLE WORK AND CARBOElC ACID
GAS.
The Indications were that brain workers nee
quire a different kind of fuel for their lungs
than that needed by body workers. While the
subject in the chamber did muscular work
he breathed out much more carbDnir acid gas
than while doing brain work. While asleep
he breathed cut less Of this gas than while
awake and at rest.
When he performed violent muscular work
the subject raised the temperature of his
little cell to such 2 height that it became UNI
comfortable This is said to be due to- the
tact that the greater amount Of fuel retained
by the system created q greater amount of
heat when it was digesJed or burned. The
burning OF the s-cmach's fuel, by the chcmi-
cal processes Of tine digestion creates heat.
just as does the burning of coal i'm a ruua
Ii would. therefore, appear that the bra 100
worker not only requires less quantity OF
food than the body worker. but that he gives
Off less carbOnic acid gas and less haa. iu tho
room in which he is at work.
II this interesting line Of experimentation
shall result in the asceEtainmcut of the par
ticular foods which nOurisl the Intellectual
as well as the purely animal parts of the
human organism a blessing shall indeed
have been conferred upon mankind. Modern
experimental psychologists have devised va
rious means Of building the brain. most of
which are inconyenient and expensive fl
practca0le. But the proposition TO fertilizs
man intellect through the agency Of good
ana EalataDle food for the ever craving. ever
yearning stomach viii DOUBTLESS become more
popular when fully realized.
WHO THE SUBJECT WAS.
The subject Of the experiment of twelve
days was Mr.. A. W Smith. a physicist for
merly instructor i'm the physical laboratory
OF wesleyan university, WatertOwn, Conn.
out now engaged as an assistant 10 Prof
AtWater. The first subject ever confined En-
the air tight chamber became frightened IN
such an extent that he became iii and had 10
be liberated, but those engaged subsequently,
as subjects for preliminary tests have de-
clared that their period Of confinement was
by no means unpleasant.
DR.. o. F. Tower a chemist and another of
the assistants in the investigations described
the sensation experienced when about to en-
ter the cell for number of days as that of
one about to take a sea voyage in a state
room where he could have no communication
with the crew and other passengers. except
by telephone The subjects spend their time
as cheerfully as could be possibly expected
under the circumstances. They are able 90
see visitors through the glass opening of this
apartment but to converse with them ONLY
by wire. since three layers Of glass. with ali
spaces between, are placed in the window to
correspond with the three layers in the walls
Abnormal