TUMORS IN FOWLS 263 
mouth cavity. Microscopic examination showed the tumor to be a 
typical squamous cell carcinoma. 
Koch describes a squamous cell carcinoma (cancroid)-of a hen. 
The subject belonged to the Brahma-Putra breed, which is noted for 
its longevity. The bird had been in the Berlin Zoological Gardens 
for seven years and was full grown when brought there. Thus it 
was concluded that the bird must have been at least eight years old. 
The tumor was located in the roof of the oral cavity close to the back 
wall of the pharynx. It is to be noted that the other squamous cell 
carcinoma reported by Pick was located on the floor of the oral 
cavity and occurred in a seven year old hen. 
According to Koch’s description, the internal organs present no 
noteworthy features. On opening the oral cavity by a cut through 
the left commissure of the beak there is revealed a somewhat solid 
mass which completely fills the pharnyx and exerts such pressure on 
the larynx that it contains a depression corresponding to it. The 
surface of this yellowish mass is spotted with bright red blood clots 
which may well have caused death by strangling. 
The yellow mass is so large that the disfigurement of the tracheal 
region would have been discovered in life but for the fact that it 
was covered with feathers. The tumor is very lightly attached and 
can be raised easily. It involves only soft tissue and no alteration 
of bone is observed. Microscopic examination shows the tumor to 
be a typical squamous cell carcinoma. 
CYSTO-ADENOMA 
Pickens has reported upon a cysto-adenoma in a fowl. The sub- 
ject was a rather large Plymouth Rock and appeared to be in rela- 
tively good condition. The abdominal cavity was found to con- 
tain a pint of very thin straw colored fluid. After being collected in 
a flask, and after standing, a small amount of sediment was precipi- 
tated. The proventriculus, gizzard, liver, spleen, intestines and 
peritoneum were covered with numerous white lobulated tumor-like 
masses. These varied greatly in size, some measuring 1—2 mm. in 
diameter while others measured 5 to 6 cm. in diameter. They were 
either sessile or attached to the serosa by means of a very short 
stalk. The stalk seemed to be a continuation of the capsule of the 
nodule, and was easily broken, leaving the tumor free. The capsules 
of the nodules were smooth and resembled the peritoneum very 
closely. Many of the larger of these nodules contained small sacs 
