THE CENTRAL NERVOUS SYSTEM 385 
accumulations are irregular strands of spindle cells, with 
spindle-shaped nuclei, taking the hematoxylin very 
deeply. The supporting tissue is almost without cells, 
taking the eosin faintly, and is quite loosely arranged. 
No fibrils are seen among the cells. The blood vessels are 
congested, and at one place there is a small hemorrhage. 
The vessel walls are the same as the rest of the connective 
tissue. There is a slightly atypical metastasis in 
the liver." 
A case, the identity of which is still undecided, was 
observed in a Green Monkey {Cercopithecus callitri- 
chus) ; it may belong among the gliomata or glioses. 
There was in the middle of this monkey's cerebrum a gray 
area about 3x2x1 cm. with a softened centre, the more 
solid parts being found under the microscope to consist 
of glia tissue, blood vessels and degenerated cells. No 
true gliomatous formations could be discovered. Because 
of the indefiniteness of the lesion, it is not included in 
the tumors or inflammations. Clinically the effect of the 
change was to cause blindness and ataxia but motor 
power was not greatly impaired. 
A very small number of tumors of the brain in wild 
animals is on record in the English and German litera- 
ture, perhaps the most interesting being what resembles 
in description a subdural neurocytoma reported by 
Wilson in the Proceedings of the London Zoological 
Society, 1908. The mass was separate from the cere- 
bellum, but had hollowed out a place for itself in this part 
of the hind-brain. 
Brain "Weights. 
The policy of preserving the brain of all species 
enables us to record in the accompanying list the weights 
of a large number of specimens. In order that the figures 
may have a representative and comparative value only 
those are given where the total body weight of the animal 
is also known. The specimens were removed by the lab- 
