DISSECTING KNIVES. 



199 



Fig. 124. 



Pig.lK 



Fig.lJ6. 



The mode of using a pair of needles in breaking up 

 tissues into very small pieces is represented in fig. 127. 



Fig. 127. Ttasing-out Membrane. 



With a pair of the small needles held firmly between the 

 fore-finger and thumb, the structure must be teased out ; 



