METHODS OF USING ANTI-HOG-CHOLERA SEKUM 119 



vance knowledge is lacking hurdles should be used 

 to crowd the animals into the corner of a yard or 



PLATE 14. Injecting anti-hog-cholera serum in the ham 



pasture. In all cases in which fences are insecure 

 it is important to mark each animal at the time it 

 is vaccinated, so that if treated and untreated ones 



