33 
moderate congestion. Epi- and endocardia are slightly 
raised as if by edema. Here and there slight fragmenta- 
tion of fibers. The liver cells are granular and some 
show fat droplets. There is moderate congestion and 
more than the normal number of round nuclei between 
the columns. Here and there are focal necroses of 
varying sizes without circumferential reaction. Here 
and there are also small collections of round cells near 
to which the liver nuclei are large and show attempts at 
regeneration. In these collections but not in the necroses 
bacillary forms may be found. There is no reaction on 
the part of bile ducts. The larger vessels are thrombotic 
and in one section a thrombo-angiitis was found. One 
stretch of early plastic perihepatitis was found. The 
kidney showed slight granularity with slight cloudy 
swelling of the epithelium. The nuclei of the glomeruli 
are prominent. There is moderate congestion. The 
spleen showed distinct large lymph cell hyperplasia with 
relative inconspicuousness of small round cells. The 
follicles are very diffuse, their centers filled with large 
lymph-cells. The cords are hyperplastic and the sinuses 
compressed. Moderate congestion; no unusual blood 
destruction; one area of hyaline necrosis found. The 
proventricle and gizzard are negative with the probable 
exception of active desquamation on the surface of the 
former. The outer coats of the duodenum are negative 
except for slight richness in nuclei. The deep mucosa 
is very rich in nuclei and red blood-cells. The outer 
parts of the villi are either swollen with a cellular infiltrate 
or by an area of granular necrosis, or have disappeared. 
It would seem that the surface of the mucosa rapidly 
degenerates and desquamates. Bacteria are very numer- 
ous. The adjacent pancreas is negative. The ileum 
showed round cell infiltration of the deep mucosa, swell- 
ing of the villi and a desquamation of the surface. One 
ulcer was found having its base on the swollen mus- 
cularis and being covered with necrotic slough. Adja- 
cent peritoneum is slightly infiltrated, but chiefly con- 
gested and edematous. This ileum lesion seems to be 
the characteristic one of the disease. 
