28 SURGICAL ANATOMY OF THE 



articulate with the frontal and ethmoid, with the superior 

 maxilla and with each other. The alar cartilages articu- 

 late by their lower edges. 



The great vascularity of the nose and of the adjacent 

 parts renders union after wounds very rapid ; indeed, 

 there are cases where the entire organ has been cut off, 

 and been for some little while removed from the body, 

 reuniting entirely after careful adjustment. Plastic 

 operations for the restoration of the nose depend greatly 

 for their success on the surgeon's ingenuity but also on 

 so fashioning the flaps that they retain the vessels in their 

 continuity, thus providing for their thorough nourish- 

 ment. 



SUKGICAL ANATOMY OF THE NASAL FOSSAE AND 

 SINUSES OF THE NOSE. 



Before exposing the contents of the nasal fossae, an 

 opportunity should be taken of examining the nares by 

 means of the speculum, of performing the operation of 

 passing probes into the nasal ducts and Eustachian tubes, 

 of plugging the posterior nares, of introducing the fingers 

 and instruments for the detection or removal of nasal and 

 pharyngeal polypi, &c. 



Dissection. The saw is to be entered on one or other 

 side of the crista galli, and to be carried gently down- 

 wards through the frontal and nasal bones, the cribri- 

 form plate, and a portion of the body of the sphenoid ; 

 the hard palate on the same side is next to be sawn 

 through, the soft parts cut through with a scalpel in the 

 same line, and the remaining portion of the body of the 

 sphenoid divided. The nasal cavity being thus divided, 

 one-half will show the septum and the other the mea- 

 tuses. Each nasal fossa presents for examination a roof, 



