100 DISEASE IN WILD MAMMALS AND BIRDS 
if one may judge by the bone marrow, although excessive 
pigmentation of the liver and kidneys was not found. 
Unfortunately the spleen was not minutely studied, nor 
was the central nervous system investigated. Atrophy of 
the intestinal tract did not exist. 
Two cases occurred among the monkeys, but one 
example will answer, since the two were essentially 
the same. 
The case to be cited was that of a Japanese Macaque {Macacus 
fuscatus). $ Young, weight three pounds two ounces, exhibited in the 
Garden about four months, and apparently in good shape until two 
weeks before death when it rapidly became emaciated. 
Diagnosis. — Aplastic anemia, chronic atrophic gastritis. Atrophy 
of heart muscle, fibrosis of liver, slight local cloudy swelling of liver. 
Perilobular diffuse nephritis (subcapsular type). Congestion of spleen. 
Fibrillar fibrosis of spleen. Hemosiderin pigmentation of spleen. Local 
amyloid infiltration of spleen. Calcareous infiltration in medulla 
of adrenal. 
Coat only fair, body emaciated. Pale muscles, fat scanty. Respira- 
tory tract normal throughout save for slight emphysema. The Pericar- 
dium showed no fluid or adhesions. Epicardium glistening and slightly 
thickened. Heart pale in color. Abdomen shows no fluid or adhesions. 
Liver slightly decreased in bulk, smooth surface and sharp edges, hard, 
and rusty brown. Gall-bladder distended, contained green fluid. Spleen 
firm and normal in size. Capsule smooth, shape normal. Section sur- 
face, dark reddish brown, trabeculae distinctly visible. Kidney, normal 
in shape, capsule smooth, strips easily, smooth surface, glistening, pink- 
ish gray, consistency hard. Section surface, poor demarkation between 
cortex and medulla. R. Adrenal, thick orange yellow cortex, solid 
small brown medulla. Mouth and teeth normal. Stomach distended, 
contains gas and small quantity yellowish mucus. Mucosa everywhere 
normal. Postmortem blood examined, stained by Romanowsky, but red 
cells were disintegrated possibly by laking so examination is not satis- 
factory. Histological Sections : Heart shows normal epicardium quite 
free of fat. Myocardium peculiar in that fibres immediately under epi- 
cardium show marked broadening in a very narrow rather sharply 
indicated zone where nuclei are extremely large although not especially 
chromatic. Transverse markings here easily, although faintly recognized, 
have very indefinite borders, their longitudinal fibrdlas being ranged in 
form of a coarse reticulum. This comes about from frequent and exten- 
sive lateral anastomoses with fellow fibres giving appearance of a 
syncytium. In deeper parts, fibres are of more normal size but nuclei 
are still large and fibres, now cut in tranverse section do not appear to 
anastomose so freely; there appears to be a slight excess of fibrous 
