Contents: 1. Historical and analytical survey. 2. War motive. 3. Play motive. 4. Ceremonial greeting. 5. Social ceremony and well-wishing motive. 6. Joyous self-union motive. 7. Spiritual supplication and self-purification motive. 8. Didactic motive. 9. Commemoration motive. 10. Representational and interpretative motive. 11. Fitness-proving motive. 12. Propitiation motive. Appendices. List of plates. Index.