... by the same sanatory measures. Palsy of the acoustic nerve arises from severe shocks, contusions of the brain, convulsions, apoplexy, fever, plethora, ...

... disease, or fracture of the temporal bone, or shock of the acoustic nerve itself. It may be second- ary to disease of the middle ear set up by the same force which INFLAMMATION OF THE INTERNAL EAR. 165 produced the shock, or secondary to traumatic causes which affect the ...

... gun-powder, in which there is a 120 ACOUSTICS. sudden formation of a quantity of air, gives a shock all round which spreads as a spherical wave ...

... of fracture. These may be explained by, first: Shock to the acoustic nerve from the concussion; and sec- ondly, from ...

... Now, disregarding the aesthetic impression, we make the acoustic observa- tion that the note is produced by separate shocks, which are less frequent the nearer the tones ...

... qualities and trans- mission, forms the science of acoustics. Philosophers make a distinction between sound and noise: thus those actions which are confined to a single shock up- on the ear, or a set of ...

... cranium. 28. B. Deafness from Palsy of the acoustic Nerve.��� M. Itard supposes that this nerve may be paralysed���{a) by a severe shock or commotion, (6) by convulsions, (<?) by apoplexy, {d) ...

... thecranum^ 29 R Deafness from Palsy of the Acoustic Ne'rle.^lTnTs^oses th{t this nerve may be paralyzed (a) by a severe shock or commo- tion, (A) by convulsions, (c) by ...

... j| 234 ACOUSTICS. PART III. (continued.) SECTION IV.���ACOUSTICS, OR PHENOMENA OF SOUND AND HEARING. ANALYSIS OF THE SECTION. 1. Sound is heard when any sudden shock or impulse is given to the air, or ...