ETIOLOGICAL MOMENT IN AMERICAN SWINE PLAGUE. 165 
soon assume an oval form, consequently two individuals are devel¬ 
oped from each organism by fission. 
“ When this process proceeds rapidly, as we have found to be 
the case within the porcine organism, the microphytes do not 
attain the above given dimensions, but divide themselves so rapid¬ 
ly that the uncolored middle piece cannot always be distinguished. 
Under these conditions the successive generations become smaller, 
which is to be attributed to slower development. The younger 
generations are often exceedingly small, but are still distinctly 
oval and color profusely.”—p. 380-81. 
“When inoculated upon meat infusion, peptone-gelatine, one 
observes the development of numerous white points which either 
lie in groups or isolated colonies. The points gradually aug¬ 
ment in size until they coalesce with those in immediate proximity, 
so that the inoculated puncture appears as a homogeneous line with 
punctiform excrescences along the sides. A grayish-white wall 
develops around the point of inoculation upon the surface of the 
gelatine. 
“The organism does not cause the gelatine to become fluid.” 
p. 383, 1. c. 
It can be readily seen that this micro-organism of Schuetz ap¬ 
parently—exactly—corresponds to the one described by me in its 
deportment in gelatine, and exactly in its microscopical and mor¬ 
phological appearances when stained. 
Schuetz received fatal‘results in twenty-four hours, by inocula¬ 
tion with pure cultures in mice, and in two or three days in rab¬ 
bits, which correspond nearly enough to my experiences. 
His results in swine do not correspond with my experiences, 
the German organism appearing to be much more virulent. 
For instance: 
“ One pig five months old, inoculated June 26, died June 27— 
time twenty-four hours. 
“ One pig five months old, inoculated June 26, died June 28— 
time forty-eight hours. 
“One pig five months old, inoculated July 12, died July 14— 
time forty-eight hours. 
“One pig five months old, inoculated January 16, died January 
18—time forty-eight hours. 
