Chapter II: Part I: Playful Experimentation

I. PLAYFUL ACTIVITY OF THE SENSORY APPARATUS 7

1. Sensations of contact 7

2. Sensations of temperature 14

3. Sensations of taste 14

4. Sensations of smell 16

5. Sensations of hearing 18

(_a_) Receptive sound-play 19

(_b_) Productive sound-play 31

6. Sensations of sight 48

(_a_) Sensations of brightness 50

(_b_) The perception of colour 54

(_c_) Perception of form 60

(_d_) Perception of movement 67

II. PLAYFUL USE OF THE MOTOR APPARATUS 74

A. Playful movement of the bodily organs 75

B. Playful movement of foreign bodies 95

1. Hustling things about 95

2. Destructive (analytic) movement-play 97

3. Constructive (synthetic) movement-play 99

4. Playful exercise of endurance 101

5. Throwing plays 103

(_a_) Simple throwing 105

(_b_) Throwing with the help of a stroke or
blow 107

(_c_) Rolling, spinning, shoving, and skipping
foreign bodies 110

(_d_) Throwing at a mark 114

6. Catching 118

III. PLAYFUL USE OF THE HIGHER MENTAL POWERS 121

A. Experimentation with the mental powers 122

1. Memory 122

(_a_) Recognition 122

(_b_) Reflective memory 128

2. Imagination 131

(_a_) Playful illusion 131

(_b_) Playful transformation of the memory-content 135

3. Attention 144

4. Reason 152

B. Experimentation with the feelings 158

1. Physical pain 159

2. Mental suffering 160

3. Surprise 163

4. Fear 166

C. Experimentation with the will 169