g76 THE NERVES. 



posteriorly. Near the inferior extremity of the interstice separating the gartoriuB 

 and gracilis, it escapes and becomes subcutaneous, dividing mto a number of 

 filaments which meet those of the accessory nerve. 



LUMBO-SACRAL PLEIUS AND INTERNAL NERVES OF THE POSTERIOR MMB. 



1- 1, Lumbo-sacral plexns; 2, anterior femoral nerve; 3, internal saphena nerve; 4, obturator 



nerve; 5, originating fasciculus of the great and small femoro-popliteal nerves; 6, suj)erhcial 



ramuscul'es of the posterior gluteal nerves: 7, great femoro-popliteal nerve; 8, internal pudic 



nerve ; 9, hjemorrhoidal or anal nerve ; 10, internal plantar nerve ; 11, 12, its digital ramifications. 



KOTE— In the above figure ie seen the posterior part of the plexus formed by the nerve-branches which pass 



throuKh the three first subsacral foramina. I'hat which escapes from the foramen between the sarrum a'"! 'af ' 



lumbar vertebra, only gives a fine branch to this part of the plexus, and sends the greater portion of "« "0^68, m 



two cords, to the anterior part. This arrangement is not rare, and is generally seen we believe when ">ere »re 



•nly five iumbar vertebrse: as is remarked in ihe Ass and Mule. nn,\ som.t.mes In the Horse. It will, therefore 



Iw understood that the nerve deacribed by us as the first sacral pair bccoiues a lumbar pair. 



