172
WILLIAM N. TAVOLGA
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100 200 400
1000 2000 5000
Sound frequency Hz
Fig. 22. Audiogram for the goldfish using air and underwater loudspeakers:
( 0 ) loudspeaker in air and (0) loudspeaker in water. After Enger (1967b). Reprinted from “Lateral Line Detectors” edited by Phyllis Cahn, copyright @ 1967 by
Indiana University Press. Reprinted by permission.
I00
1000
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Frequency
Fig. 23. Audiogram for the goldfish obtained with an essentially near-field
stimulus: ( V ) subject 2, ( A ) subject 3, (0) subject 5, and (0) subject 6. After
Weiss ( 1967). Reprinted from “Lateral Line Detectors” edited by Phyllis Cahn, copyright @ 1967 by Indiana University Press. Reprinted by permission.