“…Marchand (1891) noted the resemblance of this tumor to that of the developing cen¬ tral nervous system. Pepper (1901) (1933) and Bergstrom (1937) are of opinion that the two types are in¬ distinguishable pathologically and probably differ in their clinical course only by reason of the age at which they become apparent. Tileston and Wolbach (1908) observed cell rosettes in a tumor which had produced Hutchison's syndrome, but they failed to recognize the origin of the growth.…”