Diseases of the Generative System, 2 1 5 



caustics, the patient being meanwhile supported by good 

 food and tonic medicines. 



Inversion or Prolapsus of the Vagina occurs in 

 aged or debilitated animals during "heat," and after 

 frequent pregnancy, especially in those of the " bull " 

 breed. Protrusion appears in various stages as a smooth, 

 soft tumour, between the lips of the vagina, when careful 

 distinction must be made, the appearances being liable 

 to be confounded with tumour, or inversion of the womb 

 (which see). 



Treatment consists of first clearing the organ from 

 extraneous matters, and noting the existence of abrasions, 

 &c., by the animal's movements, or sitting on it ; after 

 which it must be returned as described under Inversion 

 of the Womb, its retention being also secured by the 

 injection of astringents, as there detailed. 



Amputation of the Vagina is resorted to in cases 

 where the organ has received severe injuries, «Scc., for 

 which the canine surgeon will be required. 



The Use of the Catheter is often called for in the 

 female during pregnancy, and prolapsus, polypus, &c., 

 of the vagina, the act of urination being interfered 

 with by pressure or change of position in the organs. 

 The passage to the bladder is situated within the vagina, 

 distant from half an inch to two inches, depending on 

 the size of the animal, and is easily reached by first 

 opening the lips by the finger of the left hand, and pass- 

 ing the tube carefully forwards along the floor. Entrance 

 to the bladder is denoted by the stream of urine which 

 flows through the tube. 



Diseases of the Organs of Lactation. — Reten- 

 tion of Milk. — The process of milk secretion in its 

 ordinary course, is somewhat in advance of the period of 

 parturition. The mammary glands, of which there are 

 eight or ten, become charged with blood, and are per- 

 ceptibly enlarged, extending from the breast backwards 

 to the space between the thighs. Subsequently, near the 

 time of delivery, milk is actually secreted in readiness 

 for the young family shortly requiring it. Possibly the 

 secretion may be somewhat in advance of birth, over- 



