5 8 The Anatomy of a UOKS^, Chap. V. 



*rhe inner Ear, The firft of the two Mufcles of the inner 

 '^'^^- Ear, called Externus Tympani Auris^ or 



the external Mufcles of the Drum of the Ear, becaufe it 

 moves that Membrane upwards, arifes from the upper 

 Part of the Pallage of the Ear, and becoming narrower, 

 it grows into a very fine and fmall Tendon, which runs 

 along the outfide of the Drum, and is inferted into its 

 Center over the Hammer, which, along with the Drum, 

 it draweth upwards and outwards. 



The Internus^ or inner Mufcles, takes its Rife from the 

 bottom of the VVedge-like Bone, where it joins to the Pro- 

 ceffiis Petrofiis ; it lies within the Cavity of that Bone, 

 and at its middle is divided into two very fmall Tendons, 

 whereof one is inferted into the upper Procefs of the Ham- 

 iiier, and the other into the Neck of it. The Ufe of this 

 Mufcle alone is to draw the Head of the Hammer oblique- 

 ly forwards, and alfo to bring it fomewhat inwards -, but 

 when they ad both together, they move the Tympanum 

 with its fmall Bones upwards and downwards. This 

 Adion is performed as often as an Anirpal attentively 

 ^liltens to any approaching Noife. 



§. V. Of the Mufcles of the Tongue^ and Os Hyoides, 

 with thofe of the Larynx, Uvula, and Throat. 



^he Tongue^ The Tongue has five Pair of Mufcles 



fve Pair of proper to itfelf, befides thofe that are com- 

 Mufcles. j^Qj^ J.Q ^ ^j^^ ^j^g Q^ Hyoides. 



The firlt Pair are called the GenioglQJjum^ becaufe they 

 arife from the Chin in Men, and are inferted in the 

 Tongue. In a Horfe they arile from the Ruggednefs on 

 the middle of the lower Jaw ; in the inner and lower Part 

 of it they have feveral fuch Infcriptions ^s thofe on the 

 iireight Mufcles of the Paunch, and are inferted into the 

 low^-er Side of the middle of the Tongue. Their Ufe is ta 

 move the Tongue forwards ; which Adion is frequently 

 performed by Horfes when they gather their Meat. 



The fecond Pair, called Tpfilogkfjiwi^ becaufe they arife 

 from the bottom of the Os Hyoides: They are inferted in 

 the middle of the Tongue, and in their Adion are contra- 

 ry to the former, by drawing it backwards. 



The Myloglojfum^ or third Pair, arife from the inner 

 Part of the lower Jaw, at the Roots of the fanheft grind- 

 ing Teeth, and are inferted into th^ Ligament which ties 



the 



