152 ‘ DISEASES OF THE HOG. 
tents apply a little oxide of zinc ointment or a sim- 
ple cerate to protect the sore from the air. 
RUPIA. 
This is a disease which resembles pemphigus, 
but the elevations are flatter and contain a dark 
colored fluid; they are followed by a thick scab, 
easily separated and soon removed, or sometimes 
by ulcers. It is usually confounded with pemphi- 
gus, but as the treatment is about the same a mis- 
take will be of no importance. 
ACNE. 
This is a pustular disease sometimes seen on the 
udder of the sow and inside of the thighs. It con- 
sists of small pimples which form on the skin; some 
of the larger ones may contain a little matter. In 
a week or ten days they begin to dry up, leaving a 
‘ brown scab or mark. In some cases they become 
hard and of a reddish color and may remain in that 
condition for months. They make their appear- 
ance without causing any fever or itching. It does 
not seem to be contagious, as I have known a case 
in which the sow was nursing her pigs and none | 
of them became affected with it. 
Treatment: Givea mild dose of salts; follow this 
with syrup iodide of iron or five drops of Donovan's 
solution of arsenic three times a day in the food. 
Rub the affected parts with glycerine one ounce, 
tannic acid one dram, water one ounce. In chronic 
cases rub on a little soap liniment twice a day. If: 
the pustules should suppurate and become sores 
