HERNIA. | 
ine. ‘Tro give the {pring a proper oe of elafticity edge of the back part of the fteel mutt incline fomewhat 
ways been looked upon as a matter of the higheft con- more forwards than the lower one, whereby the inner fur- 
fequence. It has been alleged that feel is too hard, and face will be turned forwards and a little downwards. Whea 
‘ron too foft for the purpofe, and, therefore, Arnaud and this part of a trufs is made in a perpendicular. manner, its 
Richter have recommended making the fprings of a mixture lower edge generally makes more reffure than the upper 
of fteel and malleable iron. However, this advice is now one, and the place which is prefied upon is rendered fore 
deemed objectionable, and it is univerfally acknowledged in and painf 
this country, that as the {pring cannot be made too elattic, 
the beft fteel is what fhould be employed for its conftru€tion. no more than a 
Much of the power of the fpring muit manifeltly depen 
upon the thicknefs of the piece of fteel. When the patient the fpine. Others have been in favour of making the {pring 
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fteel Should be fomewhat thicker than in other inftances. effe€tual preflure. ( 
In children, and perfons who lead fedentary lives, a weaker t.15, p. 57 
fpring will fuffice. ; 
A great deal will depend upon making the fpring fit a 
clofely upon every part of the body, fo as to leave nohollow could not. 
under the fteel, which fhould be adapted to all prominences points of action; 
and depreffions. oj 
The anterior end of the {pring terminates in an expanded 
late of iron called its Aead, to which it is rivetted. This 
tter part has its pofterior furface furnifhed with a cufhion, 
than any others. But there can be no doubt, that when 
‘ the fpring is made of highly tempered elaftic fleel, the 
termed the pad, and adapted in fize and fhape to the opening length of this part of the trufs increafes its power of mak- 
Which it is intended to clofe. Now, if the pad of the truis ing preflure. We do not mean, however, to fay, that Cam- 
does not fit clofely, no preffure will be made upon the aper- per’s advice upon this point ought to be adopted. A trufs, 
ture through which the vifcera are ready to pafs, and, con- with fo ee {fpring, might be objectionable ; for when 
fequently, a protrufion is liable to happen. When any the patient lies upon the found fide, he would certainly 
her part of the trufs does not apply itfelf accurately to prefs the whole initrument towards the other fide, fo as to 
the furface of the body, the whole inftrument will not fit create a rifk of the pad of the trufs being pufhed away from 
with fufficient firmnefs, and will be apt to flip. Befides, the abdominal ring. Such a trufs mutt alfo be particularly 
when a trufs makes more preffure in one place than another, : P i 
it is likely to be produétive of pain. ; - yer that a trufs may fit in a fteady manner, it is ne- 
i i ceflary that it 
4 oe EE saat patie esas see Of this defcription are the facrum and the os ilium. Were 
ential to give a proper degree 0 
si ie | yhich forms the middle of the femi-ci 
which, when the trufs. is put on, furrounds th 
fi the circle, which it defcribes, is too feta e 
etal aa arte pte at ga rag a os sant. neck of the trufs, bas fometimes been made 
Wc cle tp hrs te wil ot cay ha SE ey oe aml 
ep the hip, and will be likely to change its fituation. prose = it Ape oh hy ticdiat ctukkintiica,, a 
‘eth 
run forward in a flraight horizontal direction, the pad of the 
ufs would be fo high inca 
r part of the abdominal ring. Hence, that part of the 
is behind and next to its head, and which has 
i ireGtion “obit . sal : d upwards too far. 
ma dire@tion ob iquely rk a efpecially upon aged Lo east Ha ae ftraight forwards. But, according 
Re line a little ichter, with a trufs of this kind, two defects can hard 
sre arm eer te Mie ey emg on age a 
int of the abdominal ring. -When the plate of the truis will not cover, the lower aie domina} ring. 
wf Si petrol onftruation, and. confequently p the other yeab,gres Ps ae ake 
Ack Ahk dicot ae ayy ne pn eck PI e rcockacter os to be affeGted by its motions. 
ove than below, and an opportunity is left for the nom eee reithitanding a trufs'may be sad sia er the 
Rcaied to.the fpine, foregoing rules, and fit very My: He head will fometimes 
that is to-fayy't e upper flip about. aaahacmilars iy ellies project much, it ». 
rufs 18 put on 
