MAMMITIS on MASTITIS. 095 



septic dressings — as chloride of zinc, carbolic acid, permanganate of 

 potash. 



In other cases, it may be necessary to expedite recovery by excision 

 of the mortified mass. In order to do this, it is sometimes, but not 

 always, requisite to cast the animal, and to fix it as for castration. The 

 opening by which the pus escapes is enlarged, and the tissues still 

 adhering to the living parts of the gland are separated from it by the 

 lingers, keeping clear as nmch as possible of the arteries, which should 

 be ligatured, if injured. When the separation is complete, ligatures may 

 be placed round the principal vessels — the ligature being a piece of 

 narrow tape or ribbon, as their walls are fragile and easily torn. If any 

 hanuorrhage occurs, the actual cautery or perchloridc of iron may be 

 employed to subdue it. The wound is then to be dressed with dis- 

 infecting and stimulating applications, until it ceases to give oil' a bad 

 odour, and is throwing out liealthy granulations. The animal must be 

 well fed, and its strength sustained by stimulants and tonics if neces- 

 sary. 



When gangrene threatens to become diffuse, there must be no hesita- 

 tion in resorting to deep scarifications, in order to limit its ravages ; 

 these allow the escape of the septic fluids, which would impregnate the 

 healthy tissues if permitted to remain ; and the isolation of the diseased 

 parts may be still further secured by plunging the actual cautery deeply 

 into them, and applying oil of turpentine, carbolic acid, perchloride of 

 h-on, or tincture of camphor to them and into the wounds. It is often 

 advisable to trace a line around the gangrenous part, so as to circum- 

 scribe it. When it is surrovyided by a ring of inflammation, then emol- 

 lient poultices may be applied to hasten its separation ; indeed, if the 

 part is quite dead, it may be judicious to cut into and remove as much 

 of it as can be done — cauterising the wound well with the hot iron or 

 perchloride of iron, and afterwards dressing it with chloride of lime, 

 carbolic acid, and other antiseptics. At the same time, antiseptic 

 medicines, tonics, and stiumlants, should be administered internally. 

 It might be well wortli trying the injection of antiseptic agents — such 

 as carbolic acid, tincture of iodine, etc., into the gangrenous tissues, by 

 means of deep incisions and a Prava;^ syringe. 



Induration following mastitis can rarely be remedied, but it may be 

 useful to continue the inunction of ointments which contain prepara- 

 tions of mercury — as the iodide, or iodine for a certain time. Armatage 

 recommends the following ointment to be applied once a day, with smart 

 friction : 



Soft soap \ lb. 



Mercurial ointment - - - - 1 oz. 



Camphor ointment - - - - 4 ,, 



Extract of belladonna - - - 4 drams. 



Or the following tincture : 



Tincture of iodine - - - - G oz. 

 Tincture of opium - - - - ^ ,, 

 Soap liniment - - - - - 4 ,, 



Frequent and gentle milking may also prove seniceable, as well as 

 dry friction. 



As a preventive measure when infection is apprehended — as in reten- 

 tion of the placenta, metritis or vaginitis, etc. — it is advisable to inject 



