326 Manual of Veterinary 3Iicrobiology. 



Contagious mammitis of milch cows. 



MM. ISTocard and Mollereau have seen and de- 

 scribed a special form of mammitis occurring in 

 milch cows and readily passing from one animal to 

 another. It appears in the form of indurated lumps 

 which commence at the base of the teat, gradually in- 

 crease in size, and may sooner or later invade the 

 whole organ. The milk is diminished in quantity, 

 becomes acid in reaction, and soon coagulates — often 

 as soon as it is drawn from the udder ; it is often 

 mixed with pus, and grumous; sometimes it exhales 

 an offensive odor. These characters it communicates 

 to good milk with w^hich it may be mixed. 



Microbe. — This is a rounded or ovoid micrococcus; 

 it measures l-2bfjt in length by l/jt. in thickness and 

 forms long straight or sinuous chains. It frequently 

 appears bi-lobed, in way of division. It is aero- 

 pregnant cows should be thoroughly injected by means of a large 

 syringe, with the following tepid solution : 



Distilled water, ... 20 liters. 



36 percent alcohol) -. i^^ 



^, * , Vaa . . .100 grams. 



Glycerin, ) 



Bichloride of mercury, . . 10 grams. 



3. Each week, at the time of grooming, the vulva, anus, and 

 lower surface of the tail of all the pregnant cows should be care- 

 fully washed with a sponge saturated with the same tepid solu- 

 tion. 



4. If a cow should abort it will be necessary to remove the 

 placenta by hand, to destroy the foetus and after-birth by fire or 

 boiling water, and to irrigate the uterus by means of a long tube 

 introduced to the bottom of the cavity, with eight or ten liters of 

 the tepid solution indicated above but containing only half the 

 proportion of sublimate. 



