18 
is more that of an ectodermic cell. It may be a small round cell sarcoma, but 
one should not lose sight of the possibility of endotheliomata, the more so when 
one sees the lymph nodes which are traversed by strands of these cells filling 
the lymph channels and pulp spaces. The endothelium of the lymph structure 
is not appreciable. There is a metastasis in the liver and several in the kidney , 
one of these latter being hematogeneous infarcts of angular shape. 
1288. Cuvier's Toucan. 
Epithelioma? Warty excrescence on right wing which appeared as an 
epithelioma or osteosarcoma from some calcified nodules in the upper parts. 
There was a similar nodule in the right lung and microscopically they are the 
same. The section shows an epithelioma with much degeneration of the 
squamous cell plugs. There are some atypical pearls. The metastasis is 
practically the same as the tumor. Metastasis of this tumor is most unusual. 
Acute Infectious Leukemia among the Parrots. 
From the middle of December, 1907, to the middle of February, 1908, 
eleven parrots were sent to the Laboratory either after death or shortly before, 
exhibiting more or less definitely the same symptoms. The usual history was 
that the birds had been out of condition for some days, refusing to take food 
and having looseness of the bowels, the evacuations being quite pale. Upon 
examination of the living bird it was found quiet with bowed head and ruffled 
feathers, especially of the head and neck. The birds dying of this infection 
comprised Levaillant's Amazons, 4; Orangewinged Amazons, 2; Rosehill 
Parrakeets, 2; Panama Amazon, 1; All-green Parrakeet, 1, and Undulated 
Grass Parrakeet, 1. No bird recovered which presented a clinical course as 
outlined above. During November there were two small birds which pre- 
sented the same general pathologic picture and diagnosis, but the condition 
was not recognized at that time. The true state of affairs with these parrots 
was not realized until the bacteriological determination led the writer to 
establish the diagnosis by taking the result of cultures and histologic picture 
into consideration together. The provisional diagnosis of infection with a 
member of the hemorrhagic septicemia group was not so far wrong. The 
process was evidently infectious and hygienic measures were indicated. The 
gross and microscopical appearances of these birds are very similar, almost 
identical, save for variations of degree. The infection atrium was apparently 
the intestinal tract in nine of the cases. 
The similarity of the results of pathological examination permits of a gen- 
eral description. The birds were considerably emaciated. The muscles were, 
however, fairly firm and presented no mottlings. The peritoneal fat was 
missing. Mucous membranes were pale. There was the usual difficulty in 
finding the meagre lymphatic tissues. The thorax was almost never involved, 
there being a mild infiltrative, but not fibrinous pleuritis in a few cases. The 
lungs were uniformly congested, in some instances hemorrhagic. Micro- 
scopically, deposits of lymphocytes were few and far between, but when 
present corresponded with those to be described in the liver. They were 
located always around bronchi. The liver was always increased from one- 
half to three times its normal size. The right lobe was apparently more 
affected than the left. It was smooth and firm and homogeneous in con- 
sistency. The color varied from a red brown to a deep purple, but it was 
mottled by irregular pale areas varying in size from one to four millimeters. 
Microscopically the parenchyma was distorted in arrangement and showed 
