156' OF TASTE. 



sion of M orgagni * — and, secondly, in the conformation 

 of the papillae, which are commonly divided into petio- 

 lated, obtuse, and conical, f The first are very few 

 in number and situated in a lunated series at the root 

 of the tongue ; the others, of various magnitudes, lie 

 promiscuously upon the back of the tongue, and chiefly 

 upon its edges and apex, where taste is most acute. J 



238. These papillae are furnished with extreme fila- 

 ments of the lingual branch of the fifth pair;§ and 

 through them we probably acquire the power of tasting. 



The ninth pair, || and the branch of the eighth which 

 also supplies the tongue,** appear intended rather for 

 the various movements of this organ, in manducation, 

 deglutition, speaking, &c. 



239. For the tongue to taste properly, it must be 

 moist, and the substance to be tasted must be liquid, 

 holding salts in solution.ff (A) For if either is in a 

 dry state, we may perceive the presence of the sub- 

 stances by the common sense of touch, which the tongue 

 possesses in great acuteness, but cannot discover their 

 sapid qualities. When the tongue tastes very acutely, 

 the papillae around its apex and margins are in some 

 degree erected. 



- . — 



• Morgaghi, Adversar. Anat. Prima. Tab. i. 



+ Ruysch, Thesaur. Aitat. 1. tab. iv. fig. 6. 



B. S. Albinos, Annotat. Acad. L. i. tab. i. fig. 6—1 1. 



J Consult Hallcr's excellent description of the tongue of a living man, in the 

 Dktionn. Eucyclopidique. Yverdon edition. Vol. xxii. p. 28. 



§ J. F. Meckel, De Quinto pare Nervorum Cerebri. (Sotting. 1748. 4to. 

 p. 97. fig. 1. N. 80. 



|| J. F. W. Bohmer, De Nona pare Nervorum Certbri. Gotting. 1777. 4tO. 



•• See Haller, Icon. Anatom. faac. ii. tab. 1 . letter g. 



Monro, on the Nervous System. Tub. xxvi. 



•ft Bellini, Guttus Organum noviaime deprchensum. Bonon. 1C65. 12mo. 



