124 
17. Concentric circles ((o)) uO, 
18. Plain coil ^ 
19. Reversed coil GNO 
20. Loop coil 
21. Continuous loop coil 
22. Fret derived from 21 HlLnilllll 
23. Broken or branching coils derived from 21 
24. Broken frets derived from 22. 
25. Wave pattern derived from 21 
26. Scrolls 
27. Plait ornament or guilloche 
28. Basketwork ornaments 
29. Rope pattern or spiral 
30. Impressions produced by twisted cords or thongs 
31. Note any of the foregoing that are not known, or any 
that are omitted here, and give the varieties of each. 
32. What combinations of colours are used ? are tertiaries 
(citrine, russet, olive), secondaries (orange, purple, green), or 
only primaries (yellow, red, and blue) employed? and in what 
proportions ? 33. Are white, black, or neutral grounds used ? 
34. Is colour used to assist light and shade ? 35. What is 
