212 THE CONTAGIOUS TYPHUS 



Thus we see, there are powerful means of 

 withstanding the production of the disease in 

 its focus, or generative bed, and likewise its 

 extension among the herds of neighbouring 

 countries ; and these latter might render them 

 in some sort obligatory, by refusing most 

 rigidly to admit to their markets, as in Italy 

 has sometimes been done, every head of cattle 

 which was not marked as inoculated or which 

 was not furnished with a permit of health. 



It is easy to conceive that those countries 

 wherein the ox-typhus has its birth, and for 

 which the breeding of cattle and their expor- 

 tation are a great source of wealth, would soon 

 feel that they are more interested than any 

 other in stifling the contagion in its focus, and 

 in affording to those countries that receive their 

 herds, every security and guarantee which they 

 have a right to expect. Interest in this case 

 coming to the help of common sense, very 

 satisfactory results would in course of time be 

 obtained. 



Moreover, we are conscious that we are here 

 dealing with very complicated questions ; for, 

 though in a book they may seem simple and 

 easy, their application is a matter of extreme 



