Page 1. Gateway at Labna _Frontispiece._ 2. Great Mound near Miamisburg 16 3. Square Mound near Marietta 18 4. Works at Cedar Bank, Ohio 19 5. Works in Washington County, Mississippi 20 6. Works at Hopeton, Ohio 22 7. Principal Figures of the Hopeton Works 23 8. Graded Way near Piketon, Ohio 25 9. Great Serpent Inclosure 29 10. Fortified Hill, Butler County, Ohio 30 11. Stone-work in Paint Creek Valley, Ohio 35 12. Work on North Fork of Paint Creek 36 13. Ancient Work, Pike County, Ohio 38 14. Work near Brownsville, Ohio 38 15. Works near Liberty, Ohio 39 16. Work in Randolph County, Indiana 40 17. } Vases from the Mounds 41 18. } 19. Ancient Mining Shaft 45 20. Pueblo Ruin at Pecos 80 21. Modern Zuni 81 22. Ruins in the Valley of the Gila 83 23. Pueblo Building restored 87 24. Ground Plan of the Building 88 25. Arch of Los[TN-2] Monjas, Uxmal 98 26. Arch most common in the Ruins 100 27. Casa No. 1, Palenque 107 28. Casa No. 2 (La Cruz), Palenque 108 29. Great Wall at Copan 112 30. Ruins at Mitla 116 31. Great Hall at Mitla 118 32. A ruined “Palace” at Mitla 119 33. Mosaic Decoration at Mitla 120 34. Great Mound at Mayapan 127 35. Circular Edifice at Mayapan 129 36. Casa del Gobernador, Uxmal 132 37. Ground Plan 132 38. Two-headed Figure at Uxmal 133 39. Decorations over Doorway, Uxmal 134 40. Ground Plan of Las Monjas, Uxmal 136 41. Ruined Arch at Kabah 139 42. Casa Colorada, Chichen-Itza 141 43. Great Stone Ring 143 44. Great Mound at Xcoch 145 45.