318 BOVINE OBSTETEICS 



on the fact that the preparations have been carefully performed. 

 The method most commonly employed is that one where the 

 operator begins at the opposite direction in which the pro- 

 lapsus took place. The uterus for this purpose is again 

 inverted upon itself. 



Modus operandi. — The uterus is placed upon a sieve, or 

 instead of it upon a broad cloth, and elevated by two assist- 

 ants, one on the right and the other on the left side of the 

 surgeon. After seeing that the uterus has not rotated around 

 its long axis, occasionally the case when the cow is rolled, the 

 fist, covered with a cloth, is placed against the most dependant 

 part of the inversion, reinverting the uterus by slow and 

 gradual pressure. While doing so the fist moves in the direc- 

 tion of the long axis of the impregnated horn toward the vulva. 

 It is imperative to follow that direction. Those who practice 

 reposition of the prolapsus uteri sometimes forget this rule, 

 pushing the inverted uterus against the ischium, unable to 

 proceed further ; this also is apt to produce rupture. 



While pushing the uterus further and further with the 

 hand, one endeavors to advance as far as possible, especially 

 when the cow does not strain. This pressure must be prac- 

 tised slowly and gently, and that portion of the uterus lying 

 on the arm is seen to return gradually. It is frequently neces- 

 sary to retract the hand, the arm being too short to advance 

 further. In order to do so an assistant presses against the 

 uterus while the operator's hand is retracted to take a new 

 hold. 



When the horn is reduced and the hand passed in as far 

 as possible, the upper portion of the arm is still in contact with 

 the prolapsed cervix vagina. To reduce them, two assistants 

 press against the prolapsed parts on either side of the vulva 

 with their hands protected by towels, reposition taking place 

 usually quite easily in the intervals between the straining, the 

 whole mass mostly slipping in all at once. During this opera- 

 tion the cow strains constantly; it may become so violent as 

 to interfere greatly with reposition. Many practitioners very 

 properly are of the opinion that the intervals of rest between 



