Saint Mary's beacon. [volume] (Leonard Town, Md.) 1867-1983, 1872-06-20

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0A CANE36
e"s ~ sssi vi nel ans 'sssasa ssdcg
suafso6 snssssis 1stszD Dbi6eA AslssSl
.bxsna b Sra - ALa4seps r, y.
ID. e, L. R. eqaealtioe nhysiciau
% 81. MsryS Ho K. Il .mske ihe iol.
'I0~ias ektssdESv II yefy SsSseatins
.ssbjeet. s1en q s~E1fv sls sssla .saiseo8i
TIE cause Of 60 qtness and itfpssi.
bls aueliorstion ~ fnhises psrticnl.rlv
appropriate q th}e IEene7< tIms.s
Re!errinRll6 tllt 81 p<tie6ee n snakrGf.
fffpm sea sic1Sex rdm31sE tBySsl
Ishss they afs most seusibss Of the misess-
he fsskue .; the nomsnt Of the descen,
Of the ship. They are also conscious. q,
that particular time. ofaa instructive efFor,
10 sigh or take o deep inspiration, the
meaning Of which II rhsnifes,. During
the deep inspiration. the chest il dilssed
for the reception OF air, and its vessels De-
come more open to admit blood. 20 that q
return Of blood from the head is then
more free than At any other period Of com
plese respiration; while on the cousfsry.
By the act Of expelllng air from the lunes
the ingress of blood IS obstructed. This
obstruction is proved BY observation when
the surfacs Of the brain IS exposed by the
operation Of trcpanning; q successive tur.
ge.cence apd sub.idence Of The brain is
then seen in alternate motion with diier.
ent states Of the chest. 4 deep inspira.
,tion. therefore, at the time IL the desccn,
Of the ship tends to eounterast the turgcs.
cence Of the brain
Sickness is sometimes produced by
wal,:ins. In this case, the same theory
Of pressure on the brain holds good but
during rapid gyration in waltxin-. the
bluod is acted on differently; it is centri.
fugal force which causes the blood to rise
ia the vessels supplied to the brain. There
is an additional Cause of cerebral distur.
hancc from 'he confusion Of objects rapid.
" presented 70 the eye; from this comes
giddiness. "a n. =
In reference to Sickness brough: on BY
swinging, I cannot do better than Quote
Dr.. Wollss.on Sickness. By swinging
is evidently from the same cause as sea
sickness. and that direction Of the motion
which occasions the most piercing ssnsa-
ton Of uueasinsss is confornable to the
same explanation already given. It is in
descending f..rwsrd that this sensation is
perceived. for then the blood has tbs great.
est tendency to move from the fee. to.
wards the head. since the line joining
them is in the direction OF the motion ;
bu, when in the descent backwards. the
motion Is transverse to the line of the
body, i, occasions but little incon veni-
ence because the tendency to propcl the
b'ond towards tho head Is then inconsid-
srshle." 49, y
The last observation Of DR.. Wo,laston.
quito accurate as to the result. plainly
scggcst. the practical bearing Of the SUB.
jset. Knowing the mode IN which the
ships movement acts on TIE brain, ve are
at once furnished with tho ONLY rational
var of avsrting sea sickness.
The Brst point is wholly. to avoid the
urricht posture. Every Gao knows TINT
il is sonnoo practice to lie down. ana
this is done aluaos. ihssi nciively, bu, il il
also known tha. to do so. though frequent.
" successful. is not invariably 40. The
way in which the motion in q swing af.
feet. the brain afford. che proper explains.
,ion ~hy living down is no, inyar;.biy suc.
cessful, and shows that il is necessary no,
only to take recumben, position bu, 10
lie in the right direction. A rer.on Il.
ing down with the S.et ,ov,rd. rho how.
of the shin is .b;ls !, Js.c.nds in Mitch.
ing, in the same position as : ner.on in ,
swing deseendin, foru.rd II vb;ch c,.e
We have seen tina, .iek mes. !. nroaueed bv
blood being forced unon n. hr,;p a.
the contrary . ner,op .,,;ne DOM nth
LiS heal ,ov,ras .hs 49, dnr;,, Oh.
descent Of the .s;n II ,hs nc.;,;.n 30 s y ams ms
dcsesnIiup baekasrJs in !. .r;n. n wb;ch
case ,se prc,,ure bv IN. Moci s;y, hs %.
v,ra. 6s f.., s,J .Ls.ss -.i,.s.t'
ar than ;n.on rsn;sn.s % iii y. ,s"s;..asa ,s s
=. the .endsn.v viii h. 80 - .oanar 81. os,
urai supply OF blood to the BRAIN II IL
nes..,,y ne, sAsis, ,s re- no. s only to q, lie down
AID i. is highly desirable that this posi.