BLACK QUARTER VACCINE 697 



BLACK QUARTER VACCINE 



Directions for using Black Quarter Vaccine, as prepared 

 and supplied by the Royal Veterinary College, London : 



Two vaccines are employed, viz., 1st and 2nd. 

 The 1st vaccine is put in the tubes without a black ring. 

 The 2nd vaccine is put up in the tubes with a black ring. 

 Each tube contains vaccine sufficient for at least ten animals. 

 An interval of eight to ten days ought to be allowed between the first 

 and the second vaccination. 



The apparatus necessary for the operation is : 



(1) A small mortar and pestle. 



(2) A graduated hypodermic syringe with a capacity of ten c.c. The 



needle of the syringe ought to be about as thick as an ordinary 

 knitting needle, and have a proportional bore. 



(3) A small pointed trocar or exploring needle, which ought to be 



a little thicker than the needle of the syringe. 



Mixing of the vaccine. Immerse the mortar and pestle for ten minutes 

 in water near the boiling point ; have at hand a quantity of water recently 

 boiled and allowed to cool. Rinse out the syringe first with five per cent, 

 carbolic solution (in water), and then two or three times with boiled 

 water. 



Drain the mortar and pestle dry, and then turn into the former the 

 contents of one of the small tubes (first vaccine for ten animals). Fill the 

 syringe (ten c.c.) with boiled (and now cold) water. Eject a few drops of 

 this into the mortar, and triturate the powder with it so as to form an 

 uniform paste. Continue the rubbing, and gradually add the whole of the 

 water in the syringe. When the powder has thus been uniformly mixed 

 with the water, suck the whole back into the syringe. 



The operation. Clip the hair from the under aspect of the tail for about 

 six inches extending upwards from the tip. Wash this part vigorously with 

 five per cent, carbolic lotion. Take the small trocar, previously purified 

 in boiling water, and bury it under the skin on the under surface of the 

 tail, entering it on the middle line about a handbreadth above the tip, and 

 pushing it vertically upwards for three inches. Give the handle of the 

 trocar a side-to-side movement so as to enlarge the gallery at its upper 

 end. Now gently shake the syringe, insert the hypodermic needle, and 

 inject one-tenth of the contents of the syringe ( = 1 c.c.). Withdraw needle 

 and syringe together, at the same time pressing firmly on the puncture in 

 the skin. The dose mentioned (1 c.c. or 18 drops) is sufficient for an 

 animal over one year old. For calves of six months the dose is 12 drops, 

 and for nine months 15 drops. 



The second vaccination is carried out after eight or ten days in the same 

 manner, the vaccine being injected under the skin of the tail immediately 

 above the seat of the first operation. After all the animals of one lot have 

 been operated on, the syringe ought to be rinsed out with five per cent, 

 carbolic solution. The operation ought not to be performed when the 

 weather is very hot or very cold. 



Every care is taken in the preparation of the vaccine, but no guarantee 

 is given regarding its safety or efficiency. 



Tetanus Antitoxin (see p. 7) is supplied in two forms, a 

 liquid serum and a dry powder. The liquid serum, prepared 



