Infectious Mammitis of Cows 965 



from the fibro-elastic capsule of the gland. As this division ap- 

 proaches the base of the gland, the operator encounters the sub- 

 cutaneous abdominal vein and a branch of the external pudic ar- 

 tery, which should be ligated, preferably with a double ligature, 

 in order to prevent anastomatic hemorrhage. 



Posteriorly the operator encounters branches of the external 

 pudic vein and artery, which require ligation. As the operation 

 extends upward, the capsule of the gland needs be detached 

 from the abdominal tunic, of which it constitutes a part, and 

 when the region of the external inguinal ring is reached the 

 operator encounters the chief vascular supply of the gland, as 

 the vessels emerge from the inguinal canal. These should be 

 carefully and securely ligated en masse. Any failure to properly 

 secure these vessels may lead to serious or fatal hemorrhage, as 

 has been repeatedly observed. 



By properly dividing the connective tissue from these vessels, 

 they may be readily bared for some distance, and a ligature 

 passed around the group of vessels, which may then be divided 

 with scalpel or scissors some distance beyond, leaving a sufficient 

 stump to insure against displacement of the ligature. If these 

 vessels are properly ligated, there can scarcely occur a serious 

 hemorrhage from any of the others. 



If the other half of the gland is to be removed, the animal, if 

 secured in lateral recumbancy, should now be turned to the op- 

 posite side, and the operation repeated. 



The wound should then be thoroughly cleansed and disinfected, 

 all blood clots washed carefully away, and all vessels which can 

 be discovered properly secured, after which the margins of the 

 wound should be trimmed in such a manner that they can be 

 brought together in proper apposition, without being either 

 stretched or flaccid. In the wound should be laid some anti- 

 septic tampons, such as strips of iodoform gauze, in order to pro- 

 vide drainage and secure antisepsis. 



2. Infectious Mammitis of Cows. Infectious 

 Agalactia. " Gelber Galt." 



Messrs. Borgeaud, Nocard and Mollereau, Zschokke, Bang, 

 Kitt and others, describe an epizootic form of mastitis in cows 

 which sometimes occasions very serious losses. Zschokke asserts 



