V. THE MUSCLES OF THE EYE AND EAR. 



Undee this head we will notice the folio win 2; : — ■ 

 Those of the eye — 



37. Orbicularis palpebrarum. 43. Obliquus inferior. 



38. Levator palpebrse superioris. 44. Rectus superior. 



39. Depressor palpebral inferioris. 45. Ttectus inferior. 



40. Quadratus nictitantis. 46. Rectus externus. 



41. Pj'ramidalis nictitantis. 47. Rectus internus. 



42. Obliquus superior. 



And the single one I propose to describe for the ear — 

 the 



48. Tensor tympani. 



To commence the dissection for a study of the muscles 

 of the eye in the Eaven, we should divide the skin down 

 to the bone by a circular incision passing completely 

 around it, a good distance back from the margins of the 

 lids. Then dissect carefully, reflecting the integument 

 as we approach these latter, equally all about them. 

 This is best done by holding its free edge with the thumb 

 and finger of the left hand, while we dexterously use a 

 sharp scalpel held in the right, the skin being kept on 

 the stretch. 



37. Tlie orhicidaris i)alpehrarnni is the first muscle we 

 shall reveal during such a dissection, and its principal 



