228 BOVINE OBSTETRICS 



Parts of the Body which are Corded. — When the fore or hind 

 legs lie in the pelvic canal they are usually corded above the 

 fetlocks, especially when strong traction must be exerted. No 

 foetal membranes should be caught between the rope and the 

 parts corded. When the head is to be fixed the loop is placed 

 around the lower jaw, or the rope without a noose is run around 

 the whole head behind the ears. In the latter instance the 

 middle of the rope is pushed over the skull behind the ears by 

 means of the tips of the fingers. Now the two free ends 

 beneath the lower jaw are twisted until the rope no longer 

 slips off when pulled at. This cord is more readily applied 

 than the head stall constructed by Binz, Schaack and Rueff. 

 A loop is only then placed around the upper jaw when it is 

 desirable to pull the head backward in the direction of the 

 skull, otherwise the loop slips off. In the normal present*- 



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Fig. 28.— Binz's Repeller. 



tion, extraction may be practiced by placing the cords above 

 the carpi or hocks. In those stables where but little room is 

 found behind the cows, so that the assistants soon touch the 

 wall with their backs, such ropes are of service. 



In order to exert force, round sticks, 30 cm. long and of a 

 diameter of 4 cm. in the middle and 3 cm. on their ends, are 

 fastened to the ropes. The free end of the cord is placed 

 around the middle of the stick with a surgical loop. The coni- 

 cal shape of this stick renders the removal of the rope easy. 



To repel the calf comfortably, Binz constructed a wooden 

 instrument, which he terms goblet-repeller (Stossbecher) 

 (fig. 28). It is used when the head is already in the vagina 

 and the fore legs still in the uterus. The goblet is placed over 

 the nose of the calf, the crutch against the breast or shoulder 

 of the operator. 



