66 THE CONTAGIOUS TYPHUS 



they inoculated, during eight meetings, 1059 

 animals with virus of the 3rd generation, and 

 the results were as satisfactory as could be 

 wished for, only CO animals having sunk under 

 the effects of this preventive operation. 



The inoculations made in 1857 and 1858 on 

 an estate belonging to the Duchess Helena, at 

 Karlowska, in the government of Pultawa, 

 and conducted by the veterinarian Eaussels, 

 likewise afforded the most satisfactory results. 



Professor Jessen thinks it certain, that beasts 

 born of cows which have been afflicted with 

 contagious typhus do not contract the disease. 

 He maintains that Europe may be preserved 

 from this frightful scourge, by taking care that 

 no cattle be exported from the steppes of 

 Russia save those which have had the dis- 

 temper either naturally or by inoculation, and 

 he is striving to propagate this opinion, and to 

 render it practical, by having all the cattle 

 inoculated, without exception. 



It is deeply to be regretted that counsels so 

 prudent have not been heeded in the 47 

 governments which, out of the 53 possessed 

 by Russia, have generated the contagious 

 typhus ; for then it would not so frequently 



