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                  Titre : Philosophical transactions of the Royal society of London. Series B, Biological sciences

                  Titre : Philosophical transactions of the Royal society of London. B

                  Auteur : Royal society (GB)

                  Éditeur : printed by Harrison and sons (London)

                  Éditeur : The Royal society (London)

                  Date d'édition : 1888-1990

                  Type : texte,publication en série imprimée

                  Langue : Anglais

                  Format : application/pdf

                  Droits : domaine public

                  Identifiant : ark:/12148/cb34422226r/date

                  Identifiant : ISSN 00804622

                  Source : Bibliothèque nationale de France

                  Relation : http://catalogue.bnf.fr/ark:/12148/cb34422226r

                  Description : Variante(s) de titre : Philosophical transactions of the Royal society of London

                  Description : Variante(s) de titre : Philosophical transactions of the Royal society of London

                  Description : Périodicité : Irrégulier

                  Description : Etat de collection : 1888 (vol. 178)-1939

                  Provenance : bnf.fr

                  Date de mise en ligne : 15/10/2007

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                  First issue for the year 1908 Previous issue 1908 (VOL199). Next issue Last issue for the year 1908
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                  Title : Philosophical transactions of the Royal society of London. Series B, Biological sciences

                  Author : Royal society (GB)

                  Url of the page : http://gallica.bnf.fr/ark:/12148/bpt6k56064p/f292.image


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                  256 SIR AV. MACEVVEX 0Nr THE ROLE OF THE VARIOUS ELEMENTS

                  256 SIR M. MACKVVKÏS UjN llift .kuIjK.. ur inn iaiuww nm,«».i
                  however, a thickening ot' the shaft at one part, and it was considérée! probable that
                  the silve'r ring lay underneath. The bone was scraped through in a vertical direction
                  and after penetniting the bone for about-one-eighth of an inch tlie silver ring was
                  exposed,' Completel v bnried in rirni osseous tissue.
                  Three otlier apertures were scraped through at différent parts of the circumference
                  of the shaft so as to 'expose the silver ring at each.

                  Tlie thiekness of the new bone covering the ring in front was fully one-eightb of
                  an inch and it was a Httle les* hehind. Thus the silver ring placed upon the .bone
                  dennded of periosteum had in three months become

                  1 j 1 11'1." lt.a 1.o ~n_n~rc~f:t ~ni~~

                  completel y enveloped in newly-formed bone one-eighth of
                  an inch in thiekness..

                  The shaft operated upon is smaller in circumference than
                  its fellow in left limb, the diminution in-bulk being apparent
                  at tlie part which was denuded of periosteum, but the new
                  bone at this part is denser than that on the other parts of
                  tlie shaft whicli were Mot operated on.

                  Though- the results attained in this expei'iment-pointjed ̃
                  in the direction that thé bone produced the osfteous tiss'iie
                  which surrounded the silver ring, it was not conelusive,
                  sitice, owing to the small .eircle of. periost,ynn reni<>ved,
                  measuïirïg only- half anjnch.itVçiiainètcr* it~ïnight -he sald,
                  bv way bf criticism, that thé periosteum, at either side
                  might havegrown ijuickly Iv over the gap and then produced
                  the osseous "f issue \\liich covered the silver .ring.- In order
                  to meet this criticism two other experimei'fts were made. °

                  -J -l. -c-
                  Fm; 2.– Silver ring exi>en- TWo inches of the diaphysis of the right radius,
                  ̃ mCllt Xa o. !•• Specime" coinprising the wholë sh'aft with.the exception of half an
                  _n,~nt Xo. 1. Spécimen p. thc wholë e s a, \V1 Lt Je exception ofhalfan
                  ̃shows, the silver ring ex-t fi^m e;th hv8K|1 ];,“ wm. deniuleîï of periosteum
                  shows thé removal ring ex-; ;f,therepiphvseanH.e,weredem~ofperiosteum
                  poser! by removal of en- i-emovefl i i -i.ii.i- e 1
                  vetoping portion ofl-one. which was eutirely removed along with thé superhc.al
                  vetopiiig I)ortioii of I)one. •osseous laver of the shaft. Two silver rings were then
                  placed upon thé centre of the. shaft about half an inch apart. During the necessary
                  manipulation the connective tissue covering of one of the adjacent muscles was
                  encroached on so as to expose- the mascular bundles, and thèse, naked muscular
                  fascieufi came into direct contact with the denudeddiaphysis.

                  Aseptiç wound healing without visible cutanée scarresulted.

                  Description of Spccimen m si-en 7 treeks after ̃ (ÎR weeks and 6 days after). There
                  was no skin scar visible to the unaided eye. The periosteum at the epiphyseal ends
                  ^was normal and could be separated from the undërlying bone readily. Toward the
                  centre of the shaft, over the wholë extënt pfevtôusly denuded of periosteum, the soft


                  Source: gallica.bnf.fr / Bibliothèque nationale de France

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