Abstract
The author describes a case of olivopontocerebellar atrophy in the cat which resembles closely the similar disorder encountered in man. The resemblance extended to such specific characteristics of the human disease as the relative preservation of the vermis and flocculus of the cerebellum, the preservation of the central cerebellar nuclei and the variable involvement of the Purkinje cells. He believes that the appearance of what seems to be a true olivopontocerebellar atrophy in an animal holds the promise of ultimate exptl. study of the etiology of this and related degenerative conditions in man.