76 The Anatomy of a HORSE. Chap. V. 



The fecond is called Perojueus Anticus, tlio' improperly 

 in a Horfe, who want? that Bone which in Man is named 

 Perone^ or Fibula. This takes its Origin from the upper 

 Appendix of the Tibia or Leg-bone, and is inferted into the 

 Outfide of the Inftep-bone, which with the reft of the Foot 

 it moves forward and fomewhat outward. 



The Foot is alfo extended or drawn back- 

 dedhlhuT' ^^^^"^^ ^>' ^^^^^ Mufcles, the firft is called 

 Mufdes^." Ga/trocnemius Externus^ and is that Muf- 

 cle which in Man forms the Calve of the 

 Leg. It takes its Rife from the inner Head of the Thigh- 

 bone, and Part of it from the outer Head of the fame 

 Bone, and afterwards uniting together about the middle of 

 the Leg, they there turn into one llrong Tendon, which being 

 united with that of the following Mufcle, to wit, the Gaf- 

 trocnemius internus^ are both inferted into the Heel-bone. 



This Mufcle lieth fomewhat under the former, arifing 

 from the hinder part of the upper End of the Leg-bone, 

 and is inferted as aforefaid. 



The lail Extender of the Foot is called Plantaris, or 

 the Mufcle of the Soal or Tread ; it arifes flelhy, rounds 

 and flender, between the former two, taking its Origin 

 from the back part of the lower Head of the Thigh-bone, 

 arid in its Defcent foon becomes a flender round Tendon ; 

 which, joining very clofely with the Tendons of the for- 

 mer two, palles down to the Heel- bone, where it leaves 

 them, and proceeds along the back part of the Inftep-bone, 

 and the two Pafterns, terminating within the Foot all over 

 the Bottom of it, making that part of the Foot which lies 

 next under the Soal, and plainly appears when the Soal is 

 drawn out. The Tendons of thefe three Mufcles joining 

 together, form that great Sinew called Magna Chorda, by 

 Vv'hich thQ Butchers hang up their Meat. 



The Foot is alfo moved fomewhat fide- 

 Mo^edJUf.yys ^^ ^j ^^^.^^^ ^^^ outward, by 



hytn^oMuJaes. ,^^ ^ufcles. 



The firft is called Tibialis Pofiicus^ having its Origin 

 from the upper ■ End of the Leg- bone, and its ufe being 

 to move the Foot obliquely inward. 



The fecond, called Peronceus Poflicus^ arifes from the 

 upper and hinder part of the Leg- bone, by a nervous and 

 ftrong Beginning, and defcending with the Tendon of th« 

 Peronaiis Anticus, on the outfide of the Hock, continuing 

 its Cciurfe beyond it to the Bottom of the Foot, into which 



It 



