216 DISEASES OF CATTLE. 



The ascending riipes proceed forward on tlie middle of the back, 

 twisting over each other, and are tied to the surcingle and collar. 

 The upper and lower ropes are drawn so tightly that the rope ring 

 is made to press firmly all around the vulva without risk of disidace- 

 ment. '^I'his sliould be worn for se\'eral days, until the womb shall 

 have closed and all risk of further eversion is at an end. Variations 

 of this device are found in the use of a narrow triangle of iron ap- 

 plied around the vulva and fixed by a similar arrangement of ropes, 

 surcingle, and collar (PL XXIII, fig. 3), a common crupper simi- 

 larly held around the vulva (PI. XXII, fig. 1), stitches through the 

 vulva, and wire inserted through the skin on tlie two hips (PI. 

 XXIII, fig. ii), so that they will cross behind the vulva; also pes- 

 saries of various kinds should be inserted into the vagina. Xone of 

 these devices, howexer, present any advantage over the simple and 

 comparative^ painless rope truss described above. Such additional 

 precautions as keeping the cow in a stall higher behind than in front, 

 and seeing that the diet is slightly laxative and nonstirnulating may 

 be named. If straining is persistent, ounce doses of laudanum may 

 be used twice a day, and the same may be injected into the vagina. 

 If the womb has been cut off, injectinns of a solution of a tea- 

 spoonful of carbolic acid in a quart of water should be used daily, or 

 more frequently, until the discharge cease."!:. 



EVERSION OP THE BLADDER. 



A genuine eversion of the bladder is almost unknown in the cow, 

 owing to the extreme narrowness of its mouth. The protrusion of 

 the bladder, however, through a laceration sustained in calving, in 

 the floor of the vagina and its subsequent protrusion through the 

 vuh-a, is sometimes met with. In this case the protruding bladder 

 contains urine; this can never be the case in a real eversion, in 

 which the inner surface of the bladder and the openings of the 

 ureters are both exposed outside the vulva. The presence of a bag 

 containing water, which is connected with the floor of the vagina, 

 will ser\'e to identify this condition. If the position of the bladder 

 in the vulva renders it impracticable to pass a catheter to draw off 

 the urine, pierce the organ with the nozzle of a hypodermic syringe, 

 or even a very small trocar and cannula, and draw off the water, 

 v/hen it will be found an easy matter to return the bladder to its 

 place. The rent in the vagina can be stitched up, but as there would 

 be rislv in any subsc(iuent calving it is best to prepare the cow for the 

 butcher. 



RUPTURE OF THE BLADDER. 



This has been l^uowu to occur iti protracted parturition when the 

 fetus finally passed while the bladder was full. The symptoms are 



