ANIDIAN MONSTERS. 
321 
Description . — It is a round, spheroidal production, (see 
Plate II, fig. 1), covered with red hair, except near its pedicle, 
a , where long white hairs, with a whorl-like disposition 
occupy a space, c, as large as a crown piece. Above the 
pedicle is a spherical body, b, about the size of a walnut. 
This is separated from the large mass by a slight constric- 
tion, and at the back of it is a little lozenge-shaped space 
destitute of hairs. The whole weighs twenty-five ounces. 
The large sphere measures six inches from the base of the 
peduncle to its opposite extremity, and four inches and a 
half in its straight diameter. The head, or upper globular, 
portion, measures nearly an inch in diameter, but the long, 
red and white hairs which cover it, increase its apparent 
size. The entire mass is elastic, and imparts to the feel a 
sense of fluctuation from a contained fluid, but which it is 
evident is not freely floating in a cyst of any dimension. 
On puncturing the body about the middle, and applying 
pressure, a somewhat sanious, turbid, and serous fluid 
flowed out. On the incision being freely extended down- 
wards, twelve ounces of this fluid were obtained. 
The structure of the growth can now be easily studied, 
(see fig. 2). Having previously injected its vessels, they 
were dissected with care. Only one principal artery and 
vein were found to exist. The former, <z, proceeds straight 
downwards to the opposite part of the growth, ramifying 
laterally in its course, and lastly, bifurcating; its venous 
companion, a\ has a similar distribution. In the right 
half of the mass, where the arrangement of the vessels is 
made clear, a little dissection exposed a circumscribed cavity, 
<?, which was lined by a clear, glistening mucous membrane 
of normal structure and appearance, and covered with a 
layer of tesselated epithelium. Anteriorly, at d , it presented 
a digital prolongation which is manifestly an imperfectly 
developed channel of communication between the mucous 
sac and the external surface. Beneath this mucous sac is 
a nodulated osseous rudiment, b, without definite shape, 
extending from before backwards. Under the microscope, 
the normal structure of bone in a somewhat imperfect 
condition, was clearly made out. From it are found to 
radiate fibrous septa, which may be said to form the bulk 
of this monstrous production. They are directed outwards, 
intricately interlacing so as to form a network, in the meshes 
of which the serous fluid was contained. External^, these 
septa are implanted into the inner surface of the common 
integument, which is in every respect healthy. In various 
parts of the mass, but especially near the entrance and exit 
