The Present Status of Vertigo Considered From a Diagnostic Standpoint

In the discussion of suppurative labyrinthitis before this section at the Chicago meeting in June, 1908, it was my privilege and good fortune to present the first paper to appear in the medical literature of this country, reporting the recent progress made in the diagnosis and treatment of labyrinthine diseases, as taught in the Vienna schools. Since then the literature on this subject has been added to very materially, notably by Mac-Kenzie 1 of Philadelphia, Fridenberg, 2 and Richards 3 of New York, and Mr. Scott 4 of London, the last contributing some valuable new research data relating to the functions of the semicircular canals. 5 My first contribution was rather a foreword, very briefly outlining the methods of functional tests of the semicircular canal system developed by the researches of Barany, Alexander and Neumann of Vienna. The basis of these tests was founded on the fact that stimulation of