Fig. 15. — Fourth Phase : Suture. — Mode of passing the thread. The 

 needle should pass the anterior and posterior lips at a point 

 equidistant from the middle line and close to their free edges. 

 In tracing the posterior lip of the wound, the needle should enter 

 at a point somewhat deeper than indicated in the figure, but so as 

 only to affect the mucous membrane. 



