98 



OBSTETRICS. 



In the second method it is evident that if there be sufficient room 

 in the pelvis for the introduction of the fingers of the left hand, there 

 can be but little necessity for instrumental assistance. 



Fig. 33. 



In the third method, that proposed by Dease, of Dublin, the in- 

 strument is introduced as a single blade of the forceps would be, the 

 point is carried fully over the child's head, and the handle grasped 

 tightly, and held firmly by one hand, while the shank of the instru- 

 ment is embraced by the other, and a movement, that of steady 

 traction downwards, should be given by that hand which embraces 

 the shank, thus converting the instrument into a lever of the third 

 order. (Fig. 33.) 



The same posture and preparatory arrangement of the patient 

 should be made, as in forceps cases ; and in the same manner, the 

 traction is to be made during a pain. This instrument may be used 

 to correct malpositions, and to assist rotation and flexion. 



THE FILLET OR NOOSE, AND BLUNT HOOK. 



The first consists of a strip of strong cloth, silk, or leather, formed 

 into a running noose, and intended to be introduced over the head in 

 whatever way can be most easily accomplished ; and this done, the 

 loop is tightened, and extraction effected by main force. Its use is now 

 discarded in head presentations. Some persons, however, still make 



