Quarterly report on ophthalmology and otology. No. VI / by Charles Stedman Bull.

  • Bull, Charles Stedman, 1844-1912.
Date:
[1881]
Catalogue details

Licence: Public Domain Mark

Credit: Quarterly report on ophthalmology and otology. No. VI / by Charles Stedman Bull. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    25. Moos, S., unci Steinbrugge, FI.—Ueber die histologischen Veriinderungen im Knochen nnd in den Weichtheilen des mittleren und inneren Ohres bei Caries des Fclsenbeines. Ibid. 26. Pomeroy, O. D.—A case of intra-cranial myxo-sarcoma, destroying the whole of the organ ot hearing, bursting through the external parts, and forming a large tumor which depended from the ear. “ Am. Jour, of Otol.,” iii, 2. 27. Baratocx.—Contribution a 1’etude des alterations de l’oreilie dans la surdi- mutite. “ Ann. des Mai. de 1’Oreille,” etc., May, 1881. 28. Moos, S., und Steinbrugge, II.—Fernere Beobachtungen iiber die histolo- gischen Yeranderungen des Labyrinths bei der hamorrhagischen Pachy- meningitis. “ Ztschr. f. Ohrenheilk.,” x, 2. 29. Sohwartze.—Stichverletzuug des Ohres mit Ausfluss von Liquor cerebro-spi- nalis. Scliwere Ilirnreiznngssymptome durch Hirnhyperaemie. “ Arch, f. Ohrenheilk.,” xvii, 1, 2. 30. Longiii, G*—II tabacco, causa di malattie auricolari e la pilocarpina nella cura di esse. “ Gazz Med. Ital. Lombard.,” Feb. 19, 26, 1881. 31. Zatjfal.—Desinfectionskapseln in Verbindung mit den iiblichen Luftdouche- apparaten. “ Arch. f. Ohrenheilk.,” xvii, 1, 2. 32. Knapp, FI.—The cotton pellet as an x, 1. 2. Baber, in a short article upon the use of the tuning-forh in the diagnosis of diseases of the ear, refers to the ef- fect of pressure exerted on the ear on the perception of the tuning-fork vibra- tions. On applying a sounding tuning- fork to the median line of the head, if one meatus be closed, the sound of the fork, which, on closing the ear lightly, is heard loudly in the obstructed ear, if the finger be pressed inward, diminishes in the closed ear with the amount of pressure exerted, until the sound is heard only slightly, or not at all louder in the closed than in the unclosed ear. The same takes place with the voice if any note be continuously hummed. In this experiment, the air in the meatus, becoming condensed, doubtless forces the membrana tympani inward and with it the ossicles. This phenomenon, Baber thinks, admits of two interpreta- tions: 1, It maybe considered due to the inward pressure of the ossicles, caus- ing slight pressure on the labyrinthine fluid, by which the functions of the laby- rinth are temporarily interfered with ; or, 2, It may be attributed to the im- pediment to the vibrations of the ossi- cles, produced by their altered tension. The fact of the sound-waves—which are reflected from the obstruction in the meatus—having to pass through a tym- panic apparatus of which the tension is abnormal probably weakens their ef- fect on the labyrinth. 3. Gruber’s paper upon diminishing and increasing the air in the external auditory canal as a means of treatment in diseases of the ear is very interesting. artificial drumhead. l> Arch, of Otol.,” The hypenemia in the canal, artificially produced by exhausting the air in the canal, can only be produced by the blood being drawn from the vessels of the deeper structures of the ear, and thus the latter are depleted. This mo- tion in the blood current is propagated to the labyrinth, and even to the cavity of the skull. Moreover, this increased or diminished atmospheric pressure ex- erts the most varying influence upon the motility of the drum membrane and upon that of the ossicles. Hence, anom- alies of the drum membrane, patholog- ical changes in the ossicles and their joints, in the Eustachian tubes and the mastoid cells, will all modify the effect of changes in the atmospheric pressure in the external auditory canal, in many cases, Gruber thinks, the air-douche through the Eustachian tubes might with advantage be replaced by increas- ing or diminishing the atmospheric pres- sure in the external auditory canal. In most of the cases where inflation of the Eustachian tubes is indicated it should be aided by this withdrawal or increase of the air-pressure in the external audi- tory canal, as improvement in the hear- ing is often thereby produced. i. In a paper upon the value of pain as a symptom of ear disease, Field calls attention to the fact that pain which has its origin in the ear is by no means localized in that organ; it may be either in front of, above, behind, or below it, indeed, anywhere on the same side of the head, and, perhaps, on both sides. The external, middle, and internal ear have all very far-reaching nerve con-