TABLE OF CONTENTS INTRODUCTION HINTS TO THE INSTRUCTOR PAGE § i. Conduct of the Course in General ...... xix § 2. Qualitative Work ...... xx § 3. The Preparation of the Instructor ......xxiii § 4. The Preparation of the Student ....... xxiv § 5. Special Directions ......... xxix § 6. Published Courses in Experimental Psychology .... xxxi PART I SENSATION, AFFECTION, ATTENTION AND ACTION CHAPTER I. VISUAL SENSATION § 7. Sensation...........I § 8. Visual Sensation ..........5 Experiment I § 9. Colour Mixing ...........9 Experiment II § 10. Campimetry ..........17 §ii. Related Experiments .........26 Experiment III §12. Visual Contrast..........30 Experiment IV § 13. Visual After-images ......... 37 CHAPTER II. AUDITORY SENSATION § 14. Auditory Sensation.........51 Experiment V §15. The Phenomena of Interference : Beats.....55 ix