512 DISEASES OF THE URINARY ORGANS. 



after the operation the animal staled freely, his urine passing through the 

 wound, which had been brought together by sutures, as well as through 

 the penis ; and for the three subsequent days, urine still issued, in part, 

 through the wound. On the fifth day, however, it came altogether by 

 the natural passage. The horse did not experience a single untoward 

 symptom ; neither did he, after the operation was ended, seem to labour 

 under any pain ; for he ate and drank well during the whole of the time. 

 He left Mr. Field's yard on the 4th of September, and is now at work, 

 quite recovered. 



Mr. John Field, in his ' Posthumous Records/ has be- 

 queathed us five cases of lithotomy — four in geldings, and one 

 in a mare ; out of which one, a gelding, proved fatal. His mode 

 of operating was much the same as that above described. 



Dilatation was successfully practised in the mare. By 

 examination ^^er rectum, ^^ a large tumour could be felt be- 

 neath the vagina. The efi'orts of the mare in straining 

 enabled me, by introducing my hand into the vagina, and 

 two fingers into the urethra, to feel the calculus, and ascer- 

 tain it to be of the rough mulberry kind. Having two 

 pairs of forceps, and also ray instrument for breaking down 

 calculi in females, I tried, but could only succeed with the 

 oval forceps. With them I grasped the stone by its long 

 axis, and found much difficulty in releasing them, owing to 

 the extent necessary to expand the instrument. I next 

 injected the bladder with warm water; but from its irritable 

 condition, only a little was retained. This, however, assisted 

 in causing a dilatation in the urethra, so that after more 

 efiPorts. having grasped the stone by its short axis, we at 

 last succeeded in removing it. It weighed 3XJ ^vj ; length 

 2>\ inches ; breadth 2J. 



Professor Spooner is reported by Mr. Morton to have 

 operated in two cases with success. On one, a gelding, 

 lithotrity was practised. An incision was made by the 

 Professor into the pelvic portion of the urethra, sufficient to 

 admit the index finger; which was used as a director with 

 a probe-pointed bistoury, to lay open the canal for two or 

 three inches in a line with the rectum. Lithotomy forceps 

 were introduced, but the stone proved too large for extrac- 

 tion unbroken. The crusher, used in human surgery, was 



