The _Sartorius_ or the _Longissimus_ draws the leg inward, deriving its Original from the upper _Spine_ of the _Ischion_; from whence it descends obliquely thro' the inside of the Thigh, and cleaves to the top on the inside of the _Tibia_. The _Gracilis_ hath its Origine in the fore-part at the bottom of the _Os Pubis_, and its Insertion in the top of the _Tibia_ on the inside. The two _Abductors_ of the Leg are the _Fascia lata_, and the _Poplitæus_. The _Fascia lata_, or the _Membranosus_, is as it were a kind of large Band, which covers all the Muscles of the Thigh. It proceeds from the outward Lip of the _Os Ilion_, is ty'd by a large Membrane to the top of the _Perone_ or _Fibula_ and sometimes descends to the end of the Foot. The _Poplitæus_, or _Sub-poplitæus_, arises from the lower and external _Condylus_ of the Thigh-Bone, passeth obliquely from the outside to the inside, till it is lost in the upper and inner part of the Leg-Bone under the Ham. _What are the Motions of the Foot, and what are its Muscles?_ The Foot performs two Motions by the help of nine Muscles, as being bent by two, and extended by seven. The two _Flexors_ are the _Crureus Anticus_, and the _Peronæus Anticus_. The _Crureus_ or _Tibiæus Anticus_, is plac'd along the _Tibia_, and takes its rise from its upper and fore-part: Afterward it is bound by two {53} _Tendons_ to the first _Os Cuneiforme_, or Wedge-like Bone, and to that of the _Metatarsus_ or Instep, which stayeth the great Toe, after having pass'd under the annular Ligament. The _Peronæus Anticus_ springs from the middle and outward-part of the _Perone_ or _Fibula_, and insinuating it self thro' the Cleft which is under the external _Malleolus_ before, sticks to the Bone of the _Metatarsus_ that supports the little Toe. The seven _Extensors_ of the Foot are the two _Gemelli_, or the _Soleus_, the _Plantaris_, the _Crureus Posticus_, and the two _Peronæi Postici_. The _Gemelli_ are the _Interior_ and the _Exterior_; the former having its Source in the inner _Condylus_, and the other in the outward and lower of the Thigh-Bone; from whence they extend themselves till they are fasten'd to the _Talus_ or Ankle-Bone by a _Tendon_ common to them, with the two following. The _Soleus_ ariseth from the top on the back-part of the Leg-Bone and _Perone_, and confounding its _Tendon_ with that of the _Gemelli_, sticks close to the _Talus_. The _Plantaris_, which lies hid between the _Gemelli_ and the _Soleus_, hath its Origine from the _Exterior Condylus_ of the Thigh-Bone; then uniting its _Tendon_ with the preceeding, it adheres to them; and this common _Tendon_ is call'd _Chorda Achillis_. The _Crureus_ or _Tibiæus Posticus_, springs from the back-part of the Leg-Bone, from whence extending it self downward, it passeth thro' the Fissure in the _Internal Malleolus_, and cleaves to the inner-part of the _Os Scaphoides_. {54}