PLATE I. 



Fig. J. Ground-plan of round tower in the canon of the Rio Mancos, consisting of two cir- 

 cular walls, with the intervening space divided into separate apartments. See page 22. 



Figs. 2 and 3. Tower adjoining a rectangular foundation in the lower caiion of the Rio 

 Mancos. See page 24. 



Fig. 4. A portion of the doorway and one corner of a carefully-built house. Height of door- 

 way 6 feet. Mancos Canon. See page 25. 



Fig. 5. Cliff-house in the rocks of Mancos Canon at Rattlesnake Bend, 100 feet above the 

 level of the bottom of the canon. See page 23. 



Fig. 6. Inscriptions upon the vs-alls of the canon near the above. Page 23. 



