, 52, 53, 54
in real and artificial retinae, 162
effect of different kinds of, 2
mechanical,
by spring-tapper, 24
conditions for maintaining uniformity of, 26
means of graduating intensity of, 22, 96
vibrational, 24, 25, 26

Temperature,
death-points in plants, 61, 63
effect of, on response
in metal, 111
in photo-sensitive cell, 158
in plants, 32, 60-69
in retina, 158
increased sensitiveness in plant due to variation of, 66, 67

Vibrational stimulus, 24, 25, 26

Vision,
binocular alternation of, 175
effect of various conditions on the period of binocular alternation
of, 177

Visual
images, revival of, 177
impression, unconscious, 178
impulse,
chemical theory of, 148
electrical theory of, 149
phantoms, 179
recurrence, 174

Vital force, 13

Vitalism, 182

Waller
on enhancement of nerve-response after continuous stimulation, 127
on relation between stimulus and response in muscle, nerve, and retina,
52, 162
on retinal response, 150, 156, 165
on reversal of response in stale nerve and retina, 11, 124, 164
on transformation from abnormal to normal response in nerve after
continuous stimulation, 124

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| |
| Transcriber's note: The following printer errors have been |
| corrected: |
| Diaphasic changed to Diphasic (fig. 26 caption) |
| Dash added (section on Continuous Transformation) |
| Blurr changed to blur (after fig. 111) |
| In creased changed to increased (after fig. 114) |
| |
| The inconsistent hyphenation of "break-down", "electro-motive" |
| and "vibration-head" is as in the original. |
| |
+------------------------------------------------------------------+

End of the Project Gutenberg EBook of Response in the L