NEOPLASMS 477 
times, medullary and squamous each twice. Three tumors 
of the pancreas and mammary gland were seen in which 
fibrotic or scirrhus areas were found, but in no case was 
there detected that hard cicatrizing cancer so commonly 
found in the human breast. All the interesting cases of 
carcinoma have been recorded in the discussion of organs 
from which they took origin. The only case of chorion- 
epithelioma has been reported in detail on page 308. The 
two cases of mixed tumors are as follows : Mixed tumor of 
the thyroid and adenocarcinoma sarcomatodes in the 
liver; they have been discussed in detail on pages 334 
and 242 respectively. 
Analysis of the incidence of tumors according to 
organs is disturbed by the large number of cases in 
Psittaci. Including this order the first place is taken by 
the kidney, followed by the liver, uterus, muscle, gastro- 
intestinal tract, bone and cartilage, thyroid, adrenal and 
lung in this order. Curiously enough, if these birds be 
subtracted the degree of organ susceptibility to new 
growths is not greatly altered. The lead is still held by 
the kidney, the uterus occupying the second place and 
then in sequence the liver, gastrointestinal tract, muscle, 
thyroid and adrenal. Examination of the figures for 
mammals shows the uterus to lead in numbers, followed 
by the liver, thyroid, and mammary gland. For the birds 
the kidney takes the undisputed head of the column with a 
total of twelve tumors (27 per cent, of all avian tumors) ; 
the next figures are shown by the liver, gastrointestinal 
tract and muscle. 
ZOOLOGICAL AND PATHOLOGICAL LIST OF TUMORS 
MAMMALIA 
Primates (2) 
Cercopithecidae — Hamadryas Baboon {Papio hamadryas) 
Papillary adenoma of gastric mucosa 
Cebidae — Brown Cebus (Cebus fatuellus) 
Hypernephroma of right adrenal 
