GANGRENOUS INFLAMMATION OF THE ITDDER. 
453 
The remaining points are to destroy or render innocuous infective 
material in the udder and to combat inflammatory changes. The former 
may he effected by injecting disinfectants, though practitioners hold very 
different views as to their action; and while some advise their use, 
others consider them of no particular value. In gangrenous inflamma¬ 
tion they are generally too late and without effect, but, on the other 
hand, they are often exceedingly useful in the purulent form. Their 
effect clearly depends on what tissues require disinfection. Though 
they can penetrate the galactophorous sinuses and large milk ducts, 
they fail to reach the fine milk ducts and alveoli. 
Four per cent, boric acid is generally recommended; Eggeling advises 
injecting with a rubber canula a one-fifth per cent, to one-quarter per 
cent, sublimate solution into the galactophorous sinuses, distributing it 
as much as possible by cautious manipulation, and removing it in ten to 
fifteen minutes by milking. Franck uses 2 per cent, alum or 2*5 per 
cent, carbolic solution. Kiekhafer had good results from injecting 
4 per cent, solution of boric acid and washing the udder externally with 
5 per 1,000 sublimate solution. When the healthy quarters still give 
milk, carbolic acid must be avoided, because it makes the milk impotable. 
Very weak solutions of iodine in potassium iodide are worth trying. 
The solution should only be of a very light sherry colour. It can then 
be freely injected. Some operators, however, use Lugol’s iodine solution 
(iodine 1, pot. iodid. 5, water 100) in quantities up to 4 fluid drachms. 
The udder should be stripped beforehand, the fluid injected, the parts 
freely massaged, and the fluid withdrawn. 
In purulent mastitis warm poltices or fomentations and wrapping 
the parts in wool will help to diminish inflammation. Bang recom¬ 
mends linseed or oatmeal poultices, and the application of linen or 
woollen cloths wrung out of hot water and kept warm by covering with 
mackintosh. Fomentation with diluted alkali or soap and water have 
often been recommended. Once tension and pain diminish, the parts 
may be smeared with flour paste and covered with wadding. Voge] 
uses a mixture of two tablespoonfuls of water, four of starch, twenty of 
glycerine, and one of turpentine. When warm the mass forms a paste, 
which is applied thickly and left on for fourteen days. From time to 
time it may be removed to allow of massage, which is of considerable 
assistance in this disease. Cold is considered by experienced practitioners 
to be badly borne, a conclusion warranted by the nature of the disease. 
Infriction with unirritating fats or unguentum hydrargyri is useful. 
Johne employs a mixture of equal parts of blue ointment, potash soap 
* 
and lard. Franck recommends an ointment of ol. hyoscyam. 8, liquor 
ammon. caust. 2, camphor 1. As soon as the abscess appears under 
the skin it should be opened and the cavity cleansed and disinfected. 
