Hog Cholera 395 
Wood charcoal Suk. Dye et de ‘ 1 pound 
Sulfur. be OR ae ae 4 1 pound 
Sodium chloride ..........., 2 pounds 
Sodium bicarbonate ........ . 2 pounds 
Sodium hyposulfite ......... . 2 pounds 
Sodium sulfate ie eae i 1 pound 
Antimony sulfide ..... 
othe ide de gs 1 pound 
“These ingreacents should be thoroughly pulverized 
and mixed. The dose of this mixture is a large table- 
spoonful for each two hundred pounds weight of hogs 
to be treated. Give only once daily.” It is better 
to give this remedy mixed with sweet milk, or in gruel, 
or mixed with raw eggs well beaten. 
A serum, the Dorset-Niles serum, is now prepared 
that gives excellent results in protecting swine against 
cholera. It is prepared by giving an immune hog large 
doses of virulent blood, which makes the hog hyper- 
immune. Blood serum from a hyper-immune hog 
when injected into a susceptible or non-immune hog 
gives it immunity against hog cholera for several 
months. This is called the “serum alone” method. If, 
at the same time the serum is injected, the hog is also 
given a dose of virulent blood, a permanent immunity 
is established. This is called the “serum-simultaneous” 
method. The serum alone can he administered by any 
careful person that follows directions. The serum- 
simultaneous treatment should be administered only by 
a qualified veterinarian, as there is danger of dissemi- 
nating the disease from the virulent blood used. 
The dose of serum will vary according to the size of 
the hog to be vaccinated, from ten to sixty cubic centi- 
