THE INSTRUMENTS FOR EMBRYOTOMY 267 



end, to which a rope is fastened by means of which an assist- 

 ant may pull (figs. 55a and 55b). 



Fig. 55a. Fig. 556. 



Short Obstetrical Hooks. 



The long hooks, excepting the long sharp hook, are less 

 frequently used in embryotomy. They are 60 cm. long, the 

 straight end being provided with a crutch for traction (figs. 55c 

 and 55d). 



Fig. 55c. — Long, Dull Obstetrical Hook. 



The long sharp hook is a very useful instrument when 

 probe-pointed to dissect the foetus. The annexed figure 



Fig. 55d\ — Fabricius's Obstetrical Hook. 



represents such an instrument (fig. 56a). The concave portion 

 of the segment forms the cutting edge. This hook has the 

 advantage not to cut the skin when slipping, thus preventing 



Fig. 56a. — Long Sharp Hook. 



injury to the uterus or vagina. Hubenet (Holland) placed a 

 guard in front of the cutting edge to protect the parent and 

 finger in case it should slip off (fig. 566). 



Kruijt's embryotome (Holland) is a convenient instrument 

 for anybody having some practice. It is 60 cm. long, its seg- 



