586 



MONOGRAPHS OF NORTH AMERICAK RODBNTIA. 



ii?! ii 



h-ii 



long, suspends the hyoid from the back part of the skull j and there are other 

 shorter, but still well-developed, "cornua". 



The salivary glands are of enormous size.* On removal of the skin, 

 tliesc glands present most conspicuously as a great mass across the throat, 

 completely filling the space between the jaw and the thorax, and between 

 the corner of the skull and point of the shoulder to the general contour of 

 the body at this part, and dipping deep behind and above the angle of the 

 skull, where it lies against the base of the skull. It is this glandular mass 

 that largely contributes to lack of distinction of neck observable in life, and to 

 the rendering of the circumferential measurement of the head behind the 

 ears as great as that of the body behind the shoulders f The two lateral 

 glands, which meet, but do not fuse, on the middle line of the throat, are the 

 parotids. Excluding the deep-seated portion beneath the mastoid and audi- 

 tory bullae, the glands form a flattened mass of irregular shape, the posterior 

 border adapted to the contour of the shoulder and thorax, the anterior simi- 

 larly fitted to the jaw. The duct proceeds from the anterior border, from a 

 point opposite the angle of the jaw, and lies superficial upon the masseter, 

 running forward along the middle of the mandibular part of this muscle, to 

 empty in the mouth near the commissure of the lips. Lying deep-seated, 

 covered by the mass just described, is found another pair of salivary glands, 

 jjcrfectly distinct, about three quarters of an inch long, of a flattened amyg- 

 daloid sliape. These are the submaxillaries ; they are in relation with the 

 muscles of the root of the tongue and inner border of the jaw, and the duct 

 appears to open on the side of the tongue near its base.J 



The wsophagus, measuring about five inches in length, is a simple tube, 

 of uniform small calibre, peculiar in no respect; it pierces the stomach at a 

 point midway between the pyloric and cardiac ends. 



The stomach, undistended and lying smoothly, flat on its side, appears 

 like a thick V, or still more like the conventijnal heart (on a pack of playing 

 cards for example"), though with gently rounded anglc,and with longer upper 

 ends and deeper eniargiuation than those of the figure just suggested. The 



* Apparently niuoh aa in tbe Boaver, and further iuOicntiuK affinity between Baplod«» and Catlor. 

 Tbe salivary glandu " ore enormons in the E«aver, extending from before tbe ear* forward and downward 

 to contact with the sabmaxillaries, wbiob are alwat one-twontieth their size ; the whole forming a sort 

 of glandular cnllar".— (Owen, Comp. Anat. and Pbys. Vert, iii, 399.) 



t The large mass of nuchal niusclei on the bock of the neck make the line from tbe occipital crest 

 to tbe Bhouldorn straight. 



(There in a large Incbrynuil glnnd. Tbo eye-ball is very diminativo, about an eighth of an Inch in 

 diuuiuior— it could easily be inserted into tbo meatus of the oar. 



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