There are also three Muscles in the inner part of the Ear, whereof the external belonging to the _Malleus_ or Hammer lies under the exterior part of the Bony Passage which reacheth from the Ear to the Palate of the Mouth, being fixt in a very oblique Sinuosity which is made immediately above the Bone that bears the Furrow, into which is let the Skin of the _Tympanum_ or Drum. The internal Muscle lies hid in a Bony Semi-Canal, in the _Os Petrosum_; one part of which Semi-Canal is without the Drum, and clos'd on the top with a Passage that leads from the Ear into the Palate. But the other part within the Drum advanceth to the _Fenestra Ovalis_, and is inserted in the hinder part of the Handle of the _Malleus_. The Muscle of the _Stapes_ or Stirrup is also hid in a Bony Tube, almost at the bottom of the Drum, and fixt in the Head of the _Stapes_. The Nose hath seven Muscles, that is to say, one common and six proper; the common constitutes part of the orbicular Muscle of the Lips, and draws the Nose downward with the Lip. Of the six proper Muscles of the Nose, four serve to dilate it, being situated on the outside, and two to contract it, which are placed in the inside. The two first Dilatators of a Pyramidal Figure, take their rise in the Suture of the Forehead, and are fasten'd by a large Filament to the _Alæ_ of the Nose. The two other Dilatators resembling a Myrtle-Leaf have their Source in {26} the Bone of the Nose, and are inserted in the middle of the _Ala_. The two Restrictors are Membranous, beginning in the internal part of the Bone of the Nose and adhering to the inner _Ala_ of the Nostril. The Lips have thirteen Muscles, _viz._ eight proper, and five common: Of the proper there are four for the Upper-Lip, and as many for the Lower: with two common for each, and the odd one. The first of the proper of the Upper-Lip bears the Name of the _Incisivus_, its Origine being in the Jaw, in the place of the Incisive Teeth and its Insertion is in the Upper-Lip. The second is the _Triangulis_, Antagonist to the former; its Rise is on the outside, at the bottom of the Lower-Jaw; and it is implanted in the Upper-Lip, near the Corner of the Mouth. The third being the _Quadratus_, springs from the bottom of the Chin before, and cleaves to the edge of the Lower-Lip. The fourth is the _Caninus_, Antagonist to the _Quadratus_, beginning in the Upper-Jaw-Bone and being terminated in the Lower-Lip near the Corner of the Mouth. The first of the common is the _Zygomaticus_, the Origine whereof is in the _Zygoma_ and its Insertion in the Corner of the Mouth, to draw it toward the Ears; so that it is the Muscle which acts when we laugh. The second of the common is the _Buccinator_ or Trumpeter, which is swell'd when one sounds a Trumpet. It hath its rise at the Root of the Molar Teeth of both the Jaws, and is extended quite round about the Lips. {27}