548 
G. Tn, Fechner, 
from the watch, the ear connected with it becomes totally inconscious of sound, 
and the Sensation of hearing is most unequivocally feit in the ear, and in that ear 
only, which but a moraent before was utterly deaf to it. If one cup be placed 
upon the middle of the watch, and the olher on the edge, the watch sound is 
heard in that ear only which is connected with the cup placed upon the middle. « 
Der Verfasser theilt noch viele Modificationen dieser Versuche mit, die 
jedoch nichts Neues lehren. Im Uebrigen meint er damit, dass der Schall im 
einen Ohr allein vernommen werde, nicht, dass blos der zu diesem Ohr gelan- 
gende Schall vernommen werde, sondern nur dass der Eindruck allein dorthin 
verlegt werde, wie aus Folgendem hervorgeht : 
p. 203. »When sound is proceeding into the two ears, but in consequence 
of its reaching one ear in greater intensity than the other is heard only in one 
ear, the Sensation of hearing in the favoured ear, though strietly limited to it, is 
augmented by the sound entering the less favoured ear, although it entirely fails 
to cause a Sensation there, or to produce a consciousness of sound in that organ. 
The more sound collected by the less favoured ear, as long as the amount is less 
than that conveyed to the other ear, the more the Sensation of sound is augmen- 
ted in the more favoured ear. The intensity of Sensation in the more favoured 
ear increases in a ratio with the increase of sound in the less favoured ear, until 
the intensity of sound is the same, or nearly the same, in both ears, when the 
Sensation experienced is the ordinary one of hearing with two ears. « 
Beachtung verdient noch Folgendes : 
p. 204. »It is sounds of the same character only which exhibit the pheno- 
menon of restriction in virlue of moderalely different intensity. The sounds must 
emanate from the same sounding body or from bodies sounding similarly. A 
little difterence in character will cause the experiment of restriction to fail. « 
»Thus, if two bells, differing considerably in character, be rung respecti- 
vely in the two ears, one louder than the other, the louder and graver sound 
does not render the other ear insensible to the weaker sound of the weakerbell. 
Both ears hear perfectly, but the loud, grave sound is heard in one ear, and the 
weak sound is heard in the other.« 
»The sound of a watch ticking continue to be heard in one ear although a 
large-sized bell is made to ring at the other, and I have not perceived, that the 
Sensation produced by the watch is at all impaired by the bell. A whistling lung- 
sound heard in one ear, is not rendered less obvious by a loud blowing lung- 
sound in the other. A hissing murmur at the apex of the heart conveyed into one 
ear, and a rasping sound at the base conveyed into the other, are both heard 
without alteration in the ears to which they are respectively conveyed.« 
Im Uebrigen ist hiebei der interessanten Versuche E. Webers ') 
zu gedenken, welche beweisen, dass man unter Wasser untergetauchl, 
*) Berichte der sächs. Ges. d. Wiss. 1851. S. 30. 
