328 DISEASE IN WILD MAMMALS AND BIRDS 
surface shows homogeneous purple pulp with faint, narrow but tough 
trabeculse. Follicles distinctly outlined, slightly large but merely of 
a slightly paler purple than pulp. On surface are many round 2-5 mm. 
sharply outlined gray thickenings of the capsule and immediately sub- 
jacent pulp. The right kidney's lower half has been replaced by a 
thin-walled clear cyst 3 x 2.5 x 2 cm. The left kidney is small, capsule 
strips with difficulty tearing surface slightly. Surface and section are 
mottled pink and gray, glistening and opaque. It is firm, dense and 
tough, cortex narrow, medulla wide. Cortex has obscure, irregular mark- 
ings with few small cysts, striae and glomeiixli, faintly visible, margin 
between layers irregular. Veins are distended over surfaces of stomach, 
under surface of diaphragm, in peritoneum over liver but not in ab- 
dominal wall. Stomach contains sour gas and water. Mucosa especially 
near eardia is deep purple. Rugae are large and permanent but mucosa 
and submucosa are soft and on section congestion does not extend deep. 
The tips of the rugae near pylorus are infiltrated and the infiltration is 
surrounded by a zone of congestion. Mucosa seems about to slough 
but has not separated. At pylorus mucosa becomes deep brown-red, 
dense, swollen, opaque and covered ^\^th a slimy, soft brown mucus. 
Folds are prominent but temporary. In jejunum and ileum mucosa is 
still swollen and opaque and rugae are still larger than normal and tem- 
porary with a dense sensation on compressing them. The color is not 
brown but deep pink and yellow with ayeas of submucous injection. 
Follicles not visible. Colon is negative except for slight thickening of 
mucosa unaccompanied by congestion or opacity. Lymph glands of 
small omentum are small, firm, yellow, homogeneous; those of the mes- 
entei-y are large, edematous, yellow brown and tense with lymph which 
escapes on section. LjTnph channels up to mesenteric stalk can be 
traced. 
Histological Notes. — Liver architecture much altered by passively 
dilated hepatic capillaries chiefly toward the centre of the distorted 
lobules. This distortion is in the form of irregular liver columns sepa- 
rated by irregular vessels and interlobular connective tissue. This latter 
is increased everywhere but is abnormal in distribution within the 
lobules. The connective tissue at the portal spaces is not so much 
increased but it shows most around arteries. Bile ducts seem not 
increased in numbers. Much bile pigment in large, coarse, dark brown 
masses chiefly settled ^vdthin portal spaces. The cells show slight fatty 
infiltration. No multinueleation. Organ is not seriously robbed of 
functionating tissue. Alterations are not equally distributed over 
section. Spleen shows enormous congestion with edema of the few 
chords and perifollicular tissue left unengorged with blood. Follicles 
are negative. No connective tissue increase. Blood destruction not 
now active but there are many hemosiderotic masses irregularly scattered. 
The subcapsular areas are loose edematous follicles. Heart muscle 
fibres have lost all transverse striations, some are hyaline Avhile others 
are fibrillar. The nuclei are decreased in number but there is no in- 
