A practical treatise on the diseases of the ear : including the anatomy of the organ / by D.B. St. John Roosa.

  • Roosa, D. B. St. John (Daniel Bennett St. John), 1838-1908.
Date:
1880
Catalogue details

Licence: Public Domain Mark

Credit: A practical treatise on the diseases of the ear : including the anatomy of the organ / by D.B. St. John Roosa. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    ments, which were supplementary to those of Miiller, in show- ing that the origin of a certain crackling sound in the ear war; not in the tendon of the tensor tympani, but in the Eusta- chian tube. 1851] Corti* an Italian anatomist, reviewed the work of his countrymen of the former centuries who studied the cochlea, and divided the lamina spiralis membranacea into two different broad zones—an inner one, Zona denticuhta ; and an outer, Zona pedinata. He described some peculiar bodies as teeth, which soon got the names of Corti s organ, and which were subsequently found to be the termination of nerves. Claudius, Bottcher, and Better followed Corti in investiga- tions of this part, which will be fully noticed in discussing the anatomy of the internal ear.f 1858] Hyrtl, an anatomist of great industry and reputation, made an important discovery of the frequency of a thin and porous bony covering to the roof of the cavity of the tympanum, thus elucidating some cases of cerebral disease arising from affections of the middle ear. Our review now extends to the time of the publication of the Archiv and the Monatsschrift fur Ohrenheilkunde, as well as to that of the American Journal; the Archives of Oph- thalmology and Otology ; to familiar ground, in the knowledge of which the subsequent pages are written. PEOGEESS IN AUEAL THEEAPETTTICS. In the earlier ages the progress in the treatment of the ear by no means kept pace with the advance in the knowledge of its anatomy. While the structure of the organ was sufficiently well understood to cause the investigation of its diseases to be both interesting and profitable, the treatment was crude and illogical, unworthy of the knowledge which should have been its basis. Herodotus! says that there were specialists in Egypt, a par- * A Manual of Histology by Strieker, p. 1054 (Translation), f For the material for the sketch of the preceding page, I am indebted ta Schwartze, Archiv fur Ohrenheilkunde. Bd. I. \ Herodotus, translated by Cary. Euterpe, p. 125.