LIST OF DIAGRAMS.
Reading edition
FIGUREPAGE
1.Origin of instinct by organic selection 35
2.Reflex and voluntary circuits 107
3.Outer surface of the left hemisphere of the brain 110
4.Inner surface or the right hemisphere of the brain 111
5.The speech zone (after Collins) 113
6.Mouth-key 131
7.Apparatus for optical experiment 135
8.Memory curves 140