SEVENTH ANNUAL REPORT. ; hare 
was limited if present at all. The tissues from this case were 
not obtained in absolutely fresh condition, hence I have disre- 
garded the cytoplasmic alterations of the ganglion cells, their 
nature indicating that they were probably entirely of post-mortem 
origin. 
In brief, the lessons found in this doubtful case of cage pa- 
ralysis consist of areas of neuroglial sclerosis, situated in the 
lower dorsal and lumbar cord, limited to the columns of Gall 
and Burdach, with irregularly degenerated fibers in the two pos- 
terior tracts, both above and below the sites of the chief areas 
of sclerosis. The fibers of the posterior nerve-roots and the 
posterior root-ganglia both showed degenerations, but apparently 
the chief descending tracts of the cord and the anterior nerve- 
roots were free from disease. 
The blood-vessels, excepting in the sclerosed areas, were found 
to be normal. 
The lesions in this spinal cord indicate that the disease was 
very like tabes dorsalis, and the symptoms of the case also re- 
sembled those of this disease. We do not look on this case as 
a typical one of cage paralysis, and simply report it as a most 
interesting observation. 
RECOM MENDATIONS. 
Although great improvements have been made in the Park 
during the past year there still remain many improvements which 
must be made, especially for stricter quarantine, and the sooner 
they are made the cheaper it will prove in the end. I believe 
that the most important change which can be made in the present 
management of the Park would be the establishment of a thor- 
ough quarantine system. 
QUARANTINE. 
The most important function to be considered under this head 
is designed to prevent the entrances of disease to the Park. Our 
greatest hopes in the control of the diseases in the Park must 
chiefly rest on the prevention of the introduction of disease from 
the outside. Eighteen valuable animals have been lost during 
the past year to our direct knowledge through the admission of 
but two diseased animals. We can form no idea as to how far 
our deaths from tuberculosis have been due to the importation 
of tubercular animals, particularly monkeys. Furthermore, un- 
less more rigorous measures are introduced soon there is no tell- 
ing when rabies, distemper, tuberculosis, anthrax, actinomycosis 
