New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1870-12-28

written some upon thl. subject has stated tst 'n
shorter when he walks tlan when standing ersCI
have tried the experlmen ever ana over agn ao
convinced that ut single point In ordinary Wupb
man ID shorter than when standing still.
EFFECT OF WALKING UPON THE HIGHT.
We have now to consider things that exceed
ngly rIte and interesting The first is that there IL
certain average length OF mans body and that this
length may be defined ms the distance between two
parallel planes which coincide respectively with his
uppermOst and lowermost points But there Is some
difference between the length Of the body and the hight
The length under certain conditions and tho first
j. that man is taller when he takes full breath than
when he has his lungs empty This fact was practically
demonstrated by the ectnrer The second Is that man
is shorter when he stands than when he IA lying down
upon his back THE Professors assistant laid down.
inches standing up, and carefully measured, IL was
shown that he was an inch shorter fhls difference
for the that when are ing down. TIE whoie
body is allowed to stretch itself out while in standing
settles down. speak, From the same canse comes
At nt after he goes to bed He ,oses perhaps inch
in the daytime One other thing VII not stop "a Prov,
pcndculaf lessons the length of the body We can prove
that mans body Is shofter when u Is bent rOf IN
stance when bend the body Mt the hips ana spread
the legs to any extent when we bend the knees we
become shorter. Tue hight OF body may DC less
and yet its length be exactly the same.
In stating che phenomena u walking have TO con-
slider two hngs-rst, whether different parts OF the
whether the body swung from side to the other
We shall find that both Of these occur In every stage OF
that center gravity constantly shifted from
side to the other aud at the same time propelled
1t oscated from side to side and at tho same tune u
performs forward movement in the direction In which
the person Is going NON taS I Or the center OF
in very tall stout persons when walking behind
pendulum Of large clock to that Of mante clock. In
the short IL swings rapidly, In the tail man
more slowly The body Is carried forward steadily but
THE GRADIGRAFa.
The lecturer then exhibited gradigraph. simple APP
paratus consisting of hollow tin tubes placed so IA
to form right-angle triangle, each tube containing
wooden piston resting spring, ard having attached
outer end piece OF charcoal By means of this
instrument he showed the variation in hight OF person
while walking, and also the oscillation Of the body from
side to side Il do not" said he, claim for th. nstrn-
possible by this means TO get a more exact
idea of the ats Of different nations II would certainly
be easy to recognize gait having any distinct character
istics as instance stage stride. We know that the
sian from the English IL is possible that THIS lnStrl
ent may yet be perfected to measure the exact
amount Of oscillation upward and downward and from
side to side. one very curious fact In regard TO walking
il that side OF the body always tends 10 out
eyes are shut to walk in straight line for any length Of
time. We heard stories cf persons losing Their way
cate that they had been walking nearly in circle
have myself tried experiments in large roorG and have
eyes that it impossible to keep that crack IalmOst
always turned to the right; and it win DO found
where persons lose their way, that they almost nyar
ably wander OFF to the right rather the lett.
RUNNING.
Concerning running, II you will lOo. at the diagrams
you will that there is not single point In the step
when parts OF one or both feet not upon the earth
Running essentially series Of leaps made upon one
foot and falling down upon the other foot.
ut time has more than expired. trust you have
gained little idea of Human LocOmotiO, it, nature,
Instruments, and methods. IOu have certainly per-
ceiyed enough gaps my presentation OF the subject
be able realize the truth ~ what every honest
student soon leaTns-that one branch or Natural
History however minute, can be followed TO the
end may tire OF it, and loose our hold ~ II our
successors may find In it more than We but God alone
knows all the fruit IL may bear