ETIOLOGY OF SPLENIC FEVER. 261 



for the first time it has an exceptional intensity. 

 Some months ago a significant fact of this nature 

 occurred in Paris. A whole family of Esquimaux 

 perished from small-pox in the ' Jardin d'Acclimata- 

 tion.' They had never been vaccinated, nor had their 

 ancestors. They were new to the attacks of small-pox, 

 which did not spread beyond them. 



