432 BACTERIA IN INFECTIOUS DISEASES. 



animal was found dead at 8.30 A. M. October 9, 

 and had evidently been dead some hours. Post 

 mortem examination shows diffuse cellulitis and 

 gangrenous sloughing of the integument and sub- 

 jacent tissues of the right side of the belly. So 

 extensive has been this sloughing that the intes- 

 tines are exposed. A very offensive odor of putre- 

 faction is given off by the gangrenous tissues. 



Having reported my own failure to find the 

 yellow fever germ, I must now refer to the recent 

 announcements of its discovery in Mexico by Dr. 

 Carmona, and in Brazil by Dr. Freire. According 

 to the first-named observer, the parasitic element 

 is found in the blood, in black vomit, and in the 

 urine of yellow-fever patients. 



The following description is copied from the 

 "Medical News" of July 21, 1883 : 



" The general agent wanting in none of these sub- 

 stances is a granular matter, only seen with a micro- 

 scope of 1,500 diameters, very abundant, ovoid, and 

 slightly } r ellow, which appeared to have filaments similar 

 to vibrating ciliae, and having peculiar movements, with 

 a tendency to repeat these again and again. At rare 

 intervals it curls itself in its greater diameter, and gener- 

 ally arranges itself on its side, gradually approximating 

 the extremities until they meet ; then it regains its 

 ovoid form, which is similar to that of the prostate 

 gland. These granulations are capable of increasing or 

 maturing, and, under special conditions, gradually lose 

 their first movement, and then unroll themselves into 

 spherical bodies of yellow color, uniform aspect and 

 dimensions, eight or ten times larger than the first 



