IMPORTANT NOTICE. 



Read every word of the following before you ever undertake 



to vaccinate a hog. 



1. Remember that there is a very decided and important distinction 

 between scrum and virus. 



Serum is the deribrinated blood of a healthy hyperimmune bog and 

 is incapable of producing cholera. 



Virus is the defibrinated blood of a hog sick of cholera and is 

 capable of producing the disease unless used with discretion and ex- 

 treme care. 



2. Virus is perishable and should be kept on ice until used. Don't 

 order "virus" unless you are in possession of a "virus permit." Don't 

 use virus after expiration date marked on bottle label. This date is 

 ten days after virus is drawn from hog. Burn all virus not used. Do 

 not handle virus on public roads, commons or ranges. Don't inject 

 virus into a hog which is already sick. Take temperature per rectum ; 

 if the temperature is above 104 degrees it indicates that the hog is 

 sick. Into such a hog inject a double dose of serum — no virus. Inject 

 serum and virus into all hogs showing a temperature below 104 degrees 

 F. The normal temperature of swine is 102 to 103 degrees. 



3. Great care and cleanliness is exercised in the manufacture of 

 anti-hog-cholera serum ; hence it behooves those who are to use it to 

 use at least ordinary caution in handling and administering it. 



4. Serum is preserved with Yi per cent carbolic acid which is, to 

 say the most of it, an extremely weak preservative in this strength, 

 hence in summer serum should be kept in a dark, cool place until used. 

 Keep it in a refrigerator if possible. However, an ordinary cellar 

 temperature is permissible. In winter proteel it from freezing. Never 

 expose serum to sunlighl or heat from stoves, radiators, steam 

 pipes, etc. 



5. Never open more than one bottle at a time, and never pour the 

 contents of this one bottle into any other bottle or vessel. Always 

 pour it from the original 1 ottle directly into a 100 c.c. cylinder graduate 

 in order to accurately measure the dose. From this graduate the 

 syringe 1- filled by removing cap and piston and pouring directly into 

 barrel <>t' syringe. 



6. All instruments and utensils used should be thoroughly sterilized 

 by boiling before use and the hands of the operator cleansed by thor- 

 oughly washing. 



—49— 



