EIGHTH ANNUAL REPORT. 123 



fibers in the anterio-lateral and the anterior ground bundle ; a few 

 scattering degenerated fibers are also present in the posterior 

 tracts, but these columns are in general free from degenerations. 

 The blood vessels in the gray matter are quite extensively con- 

 gested and areas of myelitic degeneration are frequent. 



Lumbar and Sacral Cord. — The degenerations present are al- 

 most exclusively limited to the descending columns. 



Posterior Root Ganglia. — No alterations are evident above the 

 level of myelitis. Ganglia corresponding to the area of softening 

 show a few small patches of cellular exudation and a shrinkage 

 of some of the ganglion cells. 



Blood Vessels. — The blood vessels throughout the spinal cord, 

 with the exception of the area of softening, show no apparent 

 changes. 



The case is clearly one of transverse myelitis of the mid-dorsal 

 cord with the descending degenerations below the lesion and the 

 usual ascending degeneration above. Aside from this the cord 

 seems to have been normal and the cause of the myelitis is not 

 apparent. 



Case hi. 



Vervet Monkey (Cercopithecus lalandii). — The animal pre- 

 sented the general clinical manifestations of cage paralysis. Six 

 weeks elapsed between the time of the first observation of the dis- 

 ease and the death of the animal. During this period the monkey 

 emaciated moderately and progressive atrophy of the rear extrem- 

 ities have become marked. 



The autopsy, which was performed by Dr. Blair, showed mod- 

 erate general emaciation with marked atrophy of the hind ex- 

 tremities from the pelvis down. There was a large deep indolent 

 appearing ulceration of the tissues over each tuberosity of the 

 ischium. The heart was in diastole and normal. The lungs were 

 normal. The liver was congested. The kidneys were moderately 

 congested. The bladder was well filled with urine and was other- 

 wise normal. The stomach, pancreas and intestines were normal 

 throughout. Brain and Spinal Cord. — Gross examination shows 

 no lesions in either brain or cord. 



MICROSCOPIC EXAMINATION. 



Cervical Cord. — Microscopically, the spinal cord in the cervical 

 region shows a considerable number of degenerated fibers in the 

 direct and crossed pyramidal tracts and in the antero-lateral tracts. 



