, 1879-03-17
pEDESTRIANISM.


DrnErnnI.N1cr
Emma r.cta ah,ut +1,n soto,,. - ,r.u
To,,,ons WALL. ..o ~ .,.s y. ssalklnt-
"'"s S<,s Tan: 1ars 11n., ~ .n' f"'f'
In his lecture M before W tls es Academy Q, ss.snss,
on Tuesday night, Prof. Trowbridgc pointed b,
enccs to The scicnro Of wnlsnc ss !, 's.e.'
m thc oyorarn:, a ,nor ro,sos 1'n.p', pnsatsms,,
w. 'no a'e,ase' d mau fu'Scs himself onc inch
and quarter at every step. 1nklns This datum,
With il1u average length Of step Ia walking ii IN
ordinary pnce. 1nau ltfts liz oxn yrc,ri, ~. ~.
foot from the pronn0 IN cvcrv uas
.sa,.,..a, ..;s s,.'a.,a. Ivy *"e"ts ''ntee lees
tta'efse"s uho c3pe"us an amoahe of fucs
equal to one toot-ton for every SIS to 100
fest travelled. Tllcrc nre, OF course, 1arre ysris
tions from this nyerayc. b,,t the rnIa dsI,x
III. ion, !, l., ti,ot ,ho ht,,,a 10y ,..1. asuusr
so,t w ,ra,t,,s ~. s,1' t,e te s.a M aa s niu
Sell ln Walking the efeater Tic e1crtou l
traycrs!Hg auy given distance: 60 that maa
rutstu. bis body only one inch ncr atnp I'm. NJ,
own weight once every twcntYcirbt feet. Or
tllereabout, while, conversely, ouviher. raisInp
his body al, iucl ind lalf, fits HI. own Wrse5s
lsy aseeEtatuiug tic mans wuipht. liz frnath ri
ills pace, u,ll TIC hight to Which hs rai,r, lin,
self at eucli stc, It is thus pOshible 10 detern,ns
with mathematical pxac,uess how many feet bo
4 xntk
equal to ono foottou. For IN oycrago walker.
US before s,ntctl, thfs distance yarlgs trom HSt
\ 400 feet, The pxertIon OF walking mile ihr,s.
fore, may bo roughly etatrd us eo1yalent totl,t
of lifting thirteen to fifteen tons oup jpot trom
the ground. Now, according TO pbytIoloqIsn,
m able-boaiea man ia capa6o of nt,.
forming a Il DAVIS work equivalent to from
800 to 400 foot-tons, Dr., Ranucy siats,
tho average al .frpm n5) ia nd: I'r,f. Ttos.
brilGe at about 400, ,but, in any eycut,a walking
cred rs tiiu equivalent of a Jay's work III uus
cular excrtton, and forty miles day IA d mvra
than ordinary pcrfornat,cc, but heFe cometia
nnotftpr factor. SunnnsInjr n man canaI,le of
malstng fifty miles in ten hours without e1Iraor.
tiinnry cxertloD, to what extent can no ae-
cclnrate his pace consistent with good aepft.
rate perforniuuco nrotrarted for mnny houa,
Under ordinary circutnstauces, vera lii aue..
tiovI proposed 10 MI uyera9p student of pLytol.
oev, Of how long tie man who makes dir
miles in ten hoIira ran a,stnln the npuarcDtl;
lust doublo excrtiou Of wnlktnr ten miles ~
hour, tho answer would he nye hours, Bat
such, accordIne to Dr. Iionrhton'a law, |. not
by apy mcsus the cosc. On the contrary, tue
trnOrdtuary cxcrttou al ten mile, IA
hour Is TO tlla number Of miles that b.
cun bcar the ordinary cxcrtfop Of ilyc miles d;
thc ct,ie at IL IN fn IN hc III i In ntl,er terms.
lie would be ublc to bear tl,e extraordinary strain
only IN huur md ul,arter. md to walk only
twelve md n half cnisrcusiye miles, 10 pas
the problem In form more likely to osuflu
i,n1,r tnr Inn hnnrs ,yithonl ,irnnnin.. low loug
can liz M walk I at to % rata Of gpl' slx puIlcs an hon
I!'o answer science makes IL tits problem sta
sheao terms: A. the cuhv OF 0 (slC) ls - ile
ccr,a,ucJ, wIcn. linn ,nakiur tbe calculations
reuurea. Il , ioG % 10 ss % tIsu hoafs ac i"ftyita
minutes und thlrtcc,, a,li ouc-tjlird scroiuda o.
Gut iitt,e moro tIian l!alf tas original itp y
yusts yuryine m eo}itans sa e, %L Sawaee aln n i
,naio for aueiSsntui 1'o or ineidrntaI % i@:ors;
but thu rulc rctnaI1,s thu, tic nal, who makcs
rytranrIlh,crr nvnrtt,us NJ i1,,, tn,tsek loset