THE DUCTLESS GLANDS 341 
resemble adrenal. Histological section showed a hyper- 
nephroma of vacuolated cell type, roughly alveolar. Two 
other cases, which because of their microanatomy are to 
be called hypernephroma can be added to those just cited. 
One occurred in an undulated grass parrakeet [Melopsit- 
tacus undulatus), the other in a black duck {Anas 
ohscura) . As illustrative of this tumor the former will be 
cited in brief. ' * Hypernephroma of adrenal with hemor- 
rhage into body cavity. A tumor approximating in size 
the head of the host extends from the region of the 
internal genitalia and adrenals lying more on the right 
than on the left side extending fully to cloaca and shoving 
all abdominal viscera forward. It has a pedicle springing 
from between the two upper lobes of the kidney where 
adrenals and internal genitalia are not distinguishable. 
Tumor is coarsely lobulated, well encapsulated, nowhere 
adherent. It has a pale, dirty yellow color, richly marked 
by red lines of congested vessels. It is fairly soft, i.e., 
about consistency of normal liver. Upon incising, the cut 
surface bulges markedly, is a dirty gray -yellow, blotched 
with darker gray areas, shows no internal hemorrhages 
or markings of special import. No metastases noted to 
any other organ. Microscopic section shows a light cap- 
sule surrounding the tissue of the tumor. The latter has a 
very scanty fibrous reticular framework showing no 
orderly or purposeful arrangement. Upon and between 
the reticulum, irregular and for the most part elongated 
collections of cells are placed. At times these present an 
elongated fascicular form, but this is not by any means a 
prominent feature. The cells themselves are large, 
rounded or polygonal, have coarsely granular cytoplasm 
which only in rare cases contains vacuoles. Nuclei of 
these cells stain very poorly, but it can be 
made out that they are of large epithelial type and of 
vacuolar appearance. ' ' 
A somewhat unusual tumor was encountered in a 
Polar bear {Ursus maritimus) , an adenocarcinoma of the 
