2. How clearly can you see the space that intervenes between your house and some far-distant object? Have you a clear impression of the visual elements that determine this distance?
3. Can you see a bird flying through the air? an automobile rushing down the street?
4. Can you imagine a red surface? a green surface? Try each primary color; which is most distinct to your mind’s eye?
5. Can you see a smooth surface? a rough surface? a curved surface? a flat surface? a cube? Does the cube look solid?
6. When you memorize a poem do you remember just how each word looked on the printed page?
Tests for Auditory and Olfactory Imagery
Auditory.—1. Can you in imagination hear your door-bell ringing?
2. Can you form an auditory image of thunder? of waves breaking on a rocky shore? of a passing street-car?
3. Can you mentally hear the squeak of a mouse? the twitter of a bird? the breathing of a sleeping child?
4. Do these images come to you with the distinctness of reality?