History. —X. Y., aged 45, consulted me Sept. 1, 1906, with reference to a growth in the region of the parotid gland. His family history was negative. Eight years previously he first noticed a slight enlargement over the parotid gland on right side, this grew slowly for two years until it attained the size of an egg. About this time a physician removed it. A year later the growth made its reappearance and enlarged slowly up to two months ago, then it enlarged rapidly. Examination. —It was, when seen, about the size of a large cocoanut (Figs. 1 and 2). No tenderness on pressure nor pain at other times had been noticed. The principal disturbances had been from the size of the growth and the consciousness of its presence. There had been no marked increase in the parotid secretions. The seventh nerve had not been envolved as there was no