New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1874-05-02

~ I'll A
II ia oue certain that ughthandedness dePen's
someibing on nature. As you well know. the Widest
nopula lions in the world are rightnannei aS We 'o
There ia no population anywhere IN tine woru ,nS
not found right hlndel Inefa Is hody - be So
Iected as the one tu used the most, ana togene
that right side OF the boiy tho iG so increased con-
sJerably i'm power aud in size. There ~
development given throngn SON be f sds We md
that individuals who are left-hahded make lsoo 'no 49,
side OF the or, nuu ~ ynres;nr ieas by speechitis
the right side OF the brain tit Is anocteu 81
connection between the deyelopnent OF V 1t ~
the rai. i'm the use of arm, aud the deVelppnonS
that same half Of the brain IN thc dcuity VI no
IDEAS by speech There IL therefore c1hnsutiot IT,,
tween these wo things and on that point snal' u%o
little more in moment There - pilmitlvoy ccioi,
ence between the brains. and Professor utaVo ~
6 di"covered in children the second c0ryOuuon-the
c0nyoutiOn of the left side OF the Drhlh-ls
quicker than the cohVoinP On .p ir,its must
may be ia measure OWING TO hereutl{ hat thcrs
saw but at any rate IA there ~ an eVluen.e .' b
is natural tendency TO make use or Si of Of hat
ability of development on the LETT size Is uue W n
thing natura-.hat something natural VIII oo iou ~
1t examined in the greater supply oi verv IN
part Even parrots and birds snow sOmoInms rnh
ierestug regards riShthanleanG On me pioht leg
only on the right leg. or mostly ony on .c n on
Very few parrots out OF 20 taken at ranuo seor
the left leg. according TO whaI III. smber Of them
tanned after having examined great nunD ethno like
Parrots OF known to nave so rtnIis maII
speecha parrots speech OF course IL Is perieGty w1
known that the mechanical part G sPeJv ,p rcceiyes
them aud it remarkable that their lelt Drain 800
al an
There is therefore relation between all these Things ia
the development of the rg1t side OF thg Gs 5
There Is another point OF importance: Prof. Bf9adJeio
and others have round that In the left side OF Tue Dr
the mass OF gray matter Is greater ana thero arc w
oOnyouOns than in the right side OF the Drain
A REVIEW OF SOME POINTS DEMONSTRATED
Now we come to four points OF great Importance lor
this lecture They the vital points may say III to
argument have discussed here The hrst OIL tlcSo
noins have already spoken Of II is that we find that
,iaf "a wit
persons who right-handed, ana WIN ,ng cor
the BRAIN in persons who are leIt-hauueai the ado
family is "A very strong argument TO snow thdt INC O
of the brain which serves the notion OF one sue VI WI
body that sidef the side OF the BODY ane 9ho AIDE
leads is the most important Of the two-tiat s'uo
OF the brain is the one that serves ohlehy "
the mental ne III our ~ t he deveoped con derIby
in the organ which itself seems 10 De ue'oiopg -
treat measdre owing the action OF Will IN one-al OF
the body There u certainly "A connection between
these Things but that Will come OUT more ny aIu py'
The second point H. that IN children VINO nave not yet
learned TO talk, or who have already learned ohly
little II disease comes III the eIt sue o. te W ~
one repeat which the most rapid IN It's deVeopIent
usually n disease comes 10 produce atrophy, 50
that the left side OF the brain becomes useless Ihe
children then learn TO talk Just as wei or h9rJ a.
well as II they had no affection, and tey learn IL
with the right side OF the Dra "ncn Is tb t Oy mr.
ali ~ Them, IL there is any exception don't know NJ OF
parents who were lefthanded, aud there was
no reason for ther benz leit-hinieI iact nr VIII
msfortune OF losing the half or the hraln Whlcu
served usually 10 the mental faculties, aug OtnoL d
tai faculties got devrlOped-the power Vi 1poo' - ~
octon~oud thew make use OF the eit arm then Just Us
well as any OF the riGhhalded peopo s tbot
the RICH, There Is IN these Iagts cie1 poo eu
inc right side Of the brain can he educated 70 pccou
leader mental faculties a wen y, W. ,i i NJ The
brain There Is clear proof tlat tae Ie % ~ With 1
brain can lead movements and obtain eheGnll9h VIII
the lett JUST most people VINO arc tn I'm
OBTAIN execution of movement WIN nvi 5he ~ieg
These facts therefore, DECISIVE III favor Vi INC wow
that have for my object in TINS lecture. ,,, ovar
The third point OF importance Is t1at WIN a gyeu
number OF individuals, out OF 100 examined W Ut, ~
Ole who Were left handel four Sny nav i h thop
write with the left arm. They ha peeh 'usu. o' ~
parents although lett handel to maze use oi
the right hand TO write ahd theI %iuh INC 90 fhe
cases ne had hear what the patient hdi 10 say Iue
patient being parayzed in the lett hint ne couii hot
have the proof bat IN the Otneis nc uu Io pV an
could see Therefore, left side OF the Drdlh oven III
persons who are left handed naturally III persons
who make use chiefly OF the rsht sue ., vac @ @
left side be educated 50 a. TO produce ver! sooi
handwriting instead and better tnin Tue "rtlhs oy inc
The fourth point Of importance on which shall
not dwell As IL Implies knOWeIseO Oh ueultIuo tut
you have not bht shi state !. III oaiy io w W.
exceedingly that the leg Is affected 10 the same
know Is not a part which we develop much In ITS
movements as we do develop the right Ii patient
20 tbe hoGy awag 70 disease OF the of the
brain. he will lose more II ne doGs oso % h.
he will lose more II in the right arm Wlch ne mas
been accustomed to tram than IN the rght leg. put
repeat that that argument cannot Dc unuefsro'u wen
except by medical men. pass II over therefore,
There is no Whatever 70 object TO one teachhg
childrea to make OF the two sides OF tle DOdy; IL
ynu have been convinced by arguments nave given
that brains, Is clear that we Ou@nJ 70 ue
yeIop both of them and say, at rate, as much
as this there is chanceI would not say more but at
least can say there Is ehaneetnat II We develop Tue
movements OF the two sides OF the body the two arms
and the two legs just much as the other thcre Is
chance that sides OF tho brain then VIII DC
developed regards the mental faculties. one az nuch
as the Othsr.
HOW TO DEVELOP BOTH SIDES OF TIE BRAIN.
The facts that have brought forward the last espe
cally-what have called the four points Of Importance
and particularly the three first show that there Is con-
between the development OF The brain as regards
the mental faculties, and the development OF the brain
as regards leading movements in one side OF the Dndy
There great chance therefore that II we give goHd
deal OF attention. better. as nuch attention 10 tue
left side OF our body as we give 10 tue rgh there IS
great chance would nave two brains as regards
mental functions, instead OF one rs we nave now there
doubt that we can improve tne TWO sues ol 'c
regards those children having atrophy on the
left side OF the oedy, 90 o o nOV do tenoe
the left side as make it exercise all the functions
which exist In the left side OF the Draln,
mhv not so in cases in which we have two brainsi
THINK therefore the important point shouu pe 70 Try 70
sides OF body equay-tO make use Of them alter
nacly One day or one week II would be one arn Haicn
cutting meat putting fork or spoon ln the mouth or
in any OF other various organs IN which Doh the
be- very easy indeed TO obtain great DEAL II
not all We know that adults can come to
r,ht arm can learn to write with difficulty it is true,
because adult life - much more dlncut 10 produce
these effects than In children) aud the lett arm can DC
used in great variety OF ways by persons VINO wsn
to make Of it, IL is perfectly well known that the
left arm IL enlplOyeu III
other instruments almost as well as the right arm
Therefore there is difficulty In training children "
make use Of both sides Of the body equally.
There Is also another fact regards the power OF
training. Even IN adults who have lost the power OF
speech from disease OF the left side OF the brd Is
posslbe 10 train the patient 10 speak. and likely
them 10y the Of tho right side OF the BRAIN the left
side OF those patients with great difficulty will come TO
learn. Tley always have more difficulty than do chill
dren but they learn II they are taught In the same way
IL Is the same kind OF teaching that We employ
for child when We try to make 1t speak, It Is tho
adult who has lost the power OF speech. Il is
so also, AZ regards gesture, and the rest. have
trained some patients 10 make. gestures WIN
the left arm. who had lost the power Of
gesture with the right and who were quite uncOmf0rta-