Abstract
IN 1941 a review of a series of 400 verified brain tumors was made, with certain statistics of useful survival of patients who had what were termed favorable tumors.1 This favorable group at that time represented a little more than half (56 per cent) of the whole number of tumors, and it was found in the follow-up studies that 71 per cent of patients with one of these benign new growths had been able to lead useful lives from one to eight years after the removal of the tumors. This review in reality was little more than a preliminary report, . . .