RESEARCHES ON AVIAN DIPHTHERIA. 495 



mal hen. One of these threads was wet with a culture, and the 

 other was sterile; on the following day these threads were drawn 

 out. The disease appeared only in the eye that received the in- 

 fected thread. We have hitherto dealt only with the diphtheria 

 in hens, but we propose to study a similar disease found in pigeons 

 very soon, and to endeavor to determine whether it is due to the 

 same organism as the one described. 



