WHOOPING-COUGH. 479 



ing it to be the same as that described by Afanassiew, 

 and by comparison found the latter to be a much larger, 

 shorter, more elongate bacillus. Czaplewski and Hen- 

 sel's studies embraced 44 cases of whooping-cough, in 

 which the bacillus was isolated 18 times; 5 cases of 

 bronchitis, which subsequently developed whooping- 

 cough, in all of which it was found; and i case of 

 rhinitis and bronchitis which developed whooping-cough, 

 and in which it was found on three different occasions. 



From the preceding, it will be seen that many scholars 

 have labored to detect the specific organism of this dis- 

 ease. At present several agree upon the presence ofa 

 certain bacillus in the expectorated matter; but none of 

 them have yet succeeded in producing the disease or any 

 modification of it in the lower animals. The specificity 

 is, therefore, a matter of much doubt, and rests solely 

 upon the constancy of the presence of the micro-organ- 

 ism in the sputum. 



