GLANDS OF THE ORAL CAVITY. 455 



glosso-pliaryngeal nerve in the tongue, and these have been recently sub- 

 jected by myself (Micr. Anat. II, 2, p. 32), and by llemak (Miill. Arch., 

 1852) to a more exact investigation. llemak found such ganglia also 

 upon the branches of the gustatory division of the fifth nerve in the 

 Sheep and Calf, as far as close to the apex of the tongue, though they 

 were smaller and more scanty than those upon the glosso-pharyngeus ; 

 whilst on the other hand, in man, they were wanting upon the thicker 

 branches of the gustatory division of the fifth, and were to be found 

 only as very minute ganglia upon the more delicate internal branches. 

 Reinak endeavors to demonstrate some relation between these ganglia 

 and the lingual glands, and draws a functional parallel between them 

 and the ganglion linguale, a view plausible enough, and against which 

 I only have to remark, 1. That ganglia exist not only upon the branches 

 distributed to the mucous membrane, but also upon those passing to the 

 papilhx), and in regions of the tongue (the point) where no glands are 

 found ; and, 2. That the glandular region of the root of the tongue, 

 also, possesses gustatory sensibility. Upon these grounds, I think it is 

 impossible, for the present, wholly to deny a relation of the ganglia in 

 question, to the sensations. 



C. OF THE GLANDS OF THE ORAL CAVITY. 

 I. MUCOUS GLANDS. 



133. The mucous glands of the oral cavity are yellowish or whitish 

 racemose glands, usually of a rounded form, and tuberculated surface of 

 J-2 lines in diameter, which in general lie immediately external to the 

 mucous membrane and yield a mucous secretion. 



According to the localities in which they are found, the mucous glands 

 present somewhat different relations and receive different names. 



1. The labial glands, J-l J lines in diameter, lie between the muscular 

 layer and the mucous membrane, are very numerous, and form an almost 

 continuous glandular ring round the oral aperture, which commences at 

 3 lines distance from the red edge of the lips, and possesses a breadth of 

 about J a line. 



2. The luccal glands, lying further outwards, covered by the bucci- 

 nator muscle, are tolerably numerous but smaller ; a few large glands 

 appear at the aperture of Stenon's duct upon the buccinator muscle, and 

 still further backwards in the neighborhood of the last molar tooth 

 (molar glands). 



3. The palatine glands. Those of the hard palate are small and 



That in the sheep and calf he has observed little ganglia upon the surface of the ductus 

 Wliartonianus, which are connected with a plexus of delicate nerves investing the duct." 

 TRS.] 



