137 



Fig. 164 T-Bhape Incision. 



Fig. 165.— V-8hape Incision. 



Fig. 166.— Crucial Incision. 



-Semi-Lunar Incision. 



Fig. 168.— L-shape Incision. 



-X-shape Incision. 



Fig. 170.— Elliptic Incision. 



B. — Dissections. 



Dissection is the separation of the cellular tissue from the 

 various parts to which it is united. The scalpel, the bistoury 

 and the scissors are among the necessary instruments, sometimes 

 replaced or assisted by the fingers or a strong director. With the 

 scalpel, or the bistoury, the handle is also utilized, and frequently 

 the blunt extremity of the scissors, while again in some cases the 

 cellular connections are separated with the fingers or the blunt 

 end of a director. To these instruments are added forceps, either 

 the common dissecting, or the bull-dog form. Three procedures 

 are involved, viz.: the free dissection, the limited, and the dissec- 

 tion by slices or shavings. 



