Y7//: r/;.i.\7.i/. 01; BNCXPHAUG NBBVX& 741 



number, uinl often join each i.tli-T; they may divided into three principal fn.-ciculi rising 



at slight dis'ar.- 



The motor roofo are a little larger tban int.. II ne; In-fore joining the sensitive rools 



tin y tire confounded in ii Miiall ganglion tliat peitains to them. 



Tin- jiKjulnr iiiwilimi is voluminous, lnit u| art from tliis it presents the same Ii atiire- 

 ihe llnr.-f. nci ivim,' ail tin- pr<>|HT roots of tin- pneimioga.-tric an<l inteinal n. it of 

 tin' spinal ace. >sory, and I'M -n tho>e which are united in their own ganglion. The 

 [Million of the ganglion that i.> mme ( .-[ < eially t'orint d ly the loots of the spinal ace 

 1.1 lather an intrieation of nerve-fibres than it nsd ganglion ; it is impossible by tin; most 

 ininiito dissection to separate it from the rest of the ganglion. 



The jugular Lranglion also receives a division uf the glos>o-pharyngcal, and it gives 

 one to thi> nerve ami the external bra noli of the spinal acce.-sory. 



The pncumogaMric nerve, in the ijultunil ]><irti<>t<, is milch larger tlnui in the ll<>r.-e. 

 This peculiarity is noticeable throughout its whole extent, and is indicated at its 



The ganglion it: j)lexus is absent in the Ox. The course and relations of the iierve in 



this portion are analogous to those observed in Solipeds. 



The iihitri/iiiji'nl nerve is voluminous, and the branch it .-< nds to the u-sophau'iii is the 

 largest of its divisions : this branch passes backwards to the surface of the constrietora 

 of tin pharynx, joins the external Itiryngeal, gives a large branch to the thyro-pharyngeus, 

 an 1 is insinuated on the sides of the oesophagus, between it and the thyroid gland; there 

 it divides into two portions, one of which descends on the sides of the oesophagus where 

 it forms a very lieh plexus with the branches from the inferior Inryngeal, while the other 

 is li'st immediately in the n current nerve at the thyroid gland. 



The fstn-iinl l<i,-i/it<!t! arises at a short distance above the superior laryngeal, where 

 it receive.- a large branch from the gloa&O-pharyngeal and another from the sympathetic, 

 and immediately passes alongside the cceophageal branch of the pharyngeal nerve. 

 With a little aid ntion, we may dissect a fasciculus coming from the external laryngeal 

 and passing to the crico-thyroid muscle, and the thyroid gland and its vessels, after receiv- 

 ing a branch from the superior laryngeal. In the Sheep, the external laryngeal sometimes 

 gives a branch to the a-soj.hagus. and which anastomoses with the inferior Inryngeal, or 

 ili-niids on the side of the tube, conjointly with the cosophageal branch of the 

 pharyngeal. 



The sitjii rial- 1'irtjnfjcal rises below the preceding; it is very voluminous, and com- 

 municates with the sympathetic, cither directly or through the medium of the guttural 

 pl'-xus, and with the pharyngeal nerves and external laryngeal. Bcne.ith the thyroid 

 cartilage, a large division anastomoses with the inferior laryngcul, and is finally lo-.t in 

 that nerve below the larynx. It is easily seen that this branch gives, in the cervical 

 a great numln r of iil.uuents to the oasophagus and trachea. 



ption of some insignificant peculiarities, the pneumogastric compoits 

 itself in the << rrli-nl dud tlioracii- re;/. ";<.- as in the llm>c. 



Tlii ari.-e as in Solijieds. hut their relations are somewhat ditli-rent in the 



.1 n -ion. Tin y an phiei-d in the channel formed by the trachea and o-ophagns, 



and are separated fiom the carotid artery and the cord common to the sympathy-tie ;.inl 



pnciiniog.iftiic liy tl.e v-ry great width of the a-sophagns. Their distribution to the 



nni.-.'li-of tin; larynx takes place as in the llorsr; thi- only noteworth\ feature is the 



jina.-tom(.Mi of the m-rvr. end to end, with the sujK-rior Inryngi-al. In the \\lmle of its 



:d portion, the branches to tin- <i:so|.hiiL:ii> are more numerous and voluminous than 



in Solipeds, although tin \ all ha\.- tin- .-an:e |.h\ siol. .- j.-al olliee. except those that aro 



derived from the branch of tl:e Miperior laryngeid, whii-h an- motor. 



The dinYrences riinaiked in the nerve in the iiln{i>iiiiii<il cui-ily, are in relation to 

 the volume and form of the stomach and it> compartments. 



Tin- folloNsing i.i what we have ol.M-r\id ill tin- >//'/: 



After receiving a liirge tilument from the superior curd, the inj'irlur tegojihageal nerve 

 divides into thn-e principal luanches: one i88es to the left, furnishing nerves to the 

 anterior face and greater curvature of the n ticulnm nnd the upper border of the rumen ; 

 a median, which is di-tril.nt. d ! the and rim face of the psalterium, reacho the Mil.-t.iiu-i' 

 of the mesentery, follows the abomnsimi, to which it .-ends .-...me filaments, and finally 

 anastomoses with the retrograde m-rves coming from a rich plexus that exists on the 

 posterior face oftlie li\er and gall-bladder; it forms, conjointly with the divisions of the 



p:it!i.-ti.- an ! ..-rvical ganglion; '>, I'h;ir\ n-i-al IHT\C: <. l.\t. ru;d laryngeal ; 7, Superior 

 laryngeal; H, Inferior laryng<:al ; '., '.'. <K>.'i.ii.i-. ,il l.r.m. h.-> ..(' the jih.in n-.-;d :m<l . \- 

 ti-ru.'d laryngeal. 



