24 
mal. It contains a pale clear brown fluid. The cystic, 
hepatic and common ducts are slightly distended. They 
contain a large number of thin cestodes which extend in all 
directions, and cross sections of the liver show them pro- 
truding from the cut bile ducts. The duct walls seem nor- 
mal. The worms do not seem to impede the flow of bile 
seriously. Microscopic section shows the bile ducts widened 
and their mucosa compressed by the worms. There is no 
active inflammation but a slight tendency to necrosis where 
the ducts are well fifled." 
Special Cases. 
No true neoplasms have been observed during the year. 
On December 11th, a paper was presented to the Patho- 
logical Society of Philadelphia, by Dr. C. Y. White and 
myself, entitled: "A Note on the Occurrence of Neoplasms 
in Wild Animals." This communication together with the 
discussion will be published in the Proceedings of the Patho- 
logical Society. 
The following cases seem worthy of special mention: 
I8O4. California Hair Seal. 
There is a widened aorta without exadence of pathological change in the wall. 
This does not seem to be normal compared with similar organs in other speci- 
mens. All chambers of the heart are distended with chicken fat clot. The 
ascending arch up to the origin of the subclavian vessels is distended in a 
fusiform manner to 7.5 cm. at its widest point. The root and descending por- 
tions are 4.5 cm. Thoracic vena cava is normal, but just beneath the dia- 
phragm, which is normal, the hepatic portion of the vena cava is widened into 
an ampulla at the expense of the liver. It measures 5 to 7 cm. The large dia- 
meter of this ampulla is at right angles to the general course of the vessel. 
The lower part of the vena cava measures 5 cm. AH the tributary veins are 
widely distended. Venous walls are soft and thin, but microscopically normal. 
1666. Mouflon. — Renal Calculi. 
In the pelvis of both kidneys there are irregular dark brown concretions 
having the consistency of chalk. They do not obstruct the ureter or pelvis 
apparently, nor are the mucous membranes of these cavities affected. 
1757. Gannet. — Renal Calculi. 
Both kidneys are loaded with urates far beyond any normal condition. 
The upper lobe of the right kidney is somewhat larger than the corresponding 
part of right organ and nodules are found in the substance, by palpation. 
Upon section several firm yellow white urate concretions are found in dis- 
torted pelvis. They compress the tissue, but do not destroy it. 
1733. Black Lemur. — Biliary Calculus. 
There were found three small, hard, dark green stones in the gall bladder. 
There was no apparent change in the mucosa. No stones were found in any of 
the ducts. 
