338 



DISEASES OF SWINE 



bleeding room, which is a specially prepared room set aside in 

 the serum plant for the purpose of withdrawing this blood under 

 the most cleanly conditions possible. This room is prepared 

 with all the care of an operating room in one of our large city hos- 

 pitals and is kept scrupulously clean, the great object at all times 

 being to ensure the utmost degree 

 When the sick shoat is brought 

 of cleanliness. 



into the bleeding room he is at once 

 securely fastened to a table which 

 will permit of one end being raised 

 so as to allow the head and neck to 

 1)6 on a lower level than the rest 

 of the body. This aids in the bleed- 

 ing process, and enables the opera- 

 tor to secure a larger amount of 

 blood. As this virus is very expen- 

 sive it is desirable to obtain every 

 possible drop. The pig is now 

 securely strapped to the table and 

 thoroughly washed around the point 

 of proposed operation. This is done 

 first with soap, water, and some good 

 disinfectant solution, such as creo- 

 lin. After a thorough scrubbing of 

 the neck and anterior part of the 

 ^^^ chest, the parts are washed with 



H|HH|' alcohol and then painted with tinc- 



^^^ff* _gL ture of iodin. This renders the 



f W W skin as clean and free from germs 



'""' as it is possible to get it. This 

 Fig. 5«).-Tl.roat incision for ^^^j^ -^ ^^^^ ^ ^^ assistant, and 

 virus bleeding. (Photo by Dr. 



Geo. R. White.) the operator who is to do the bleed- 



ing now commences his work. 

 The virus is obtained by bleeding from the large blood- vessels 

 located in the neck. An incision is made in the midline of the neck 

 and the vessels exposed. There are a number of ways of with- 

 drawing the blood. The most common method is to simply cut 



