The temporal lobes of the brain have long been regarded as silent areas. Writing on the "Localization of Intracranial Tumors" in 1896, Bramwell stated: ".... and last of all, the most difficult to diagnose and locate, tumors of the temporosphenoidal lobe and especially, of course, tumors of the right temporosphenoidal lobe." Again, Oppenheim in 1899 remarked: "Wir haben niemals das Recht die Lokaldiagnose Tumor des rechten Schläfenlappens zu stellen." (We never have a right to make a local diagnosis of tumor of the right temporal lobe.) Even today, in spite of much progress, the frequency with which a mass lesion in one or the other temporal lobe may reach a considerable size while producing few symptoms is only too well known to the neurologist and neurosurgeon. Accordingly, a review and analysis of a fairly large group of cases of verified tumor of the temporal lobe in an effort to add to