AMERICAN ARCHiEOLOGT. 9 



28. Were any wood, bone, shell, or stone implements, or orna- 

 ments, or pottery discovered ? 



29. What were the characteristics of these objects? Make 

 drawings or photographs if practicable. 



CAVE AND CLIFF-DWELLINGS. 



30. Have any caves or rock-shelters in your section of the 

 country ever been used by the aborigines for a dwelling? 



31. What advantages do these places furnish for defense, for ac- 

 cessibility to water, game, and other means of living ? 



32. Are there any indications of an attempt to improve or 

 strengthen these places ? 



33. What relics of man or of his works were found, and under 

 what conditions ? 



MASONRY. 



In the southwestern portions of our country and from thence to 

 the Isthmus, remains of stone and adobe structures ai-e to be seen. 

 If any have been found in your section — 



34. What is the material of which they were built ? 



35. What uniting substances, if any, have been used ? 



36. What is the plan and probable use of the structure ? 



37. What attemj)ts were made at ornamentation ? 



38. Is there a central excavation or estufa ? 



39. Was the building more than one story high ? 



40. How is it situated with reference to protection and conve- 

 nience ? 



41. What relics were found in it? 



SCULPTUEED SLABS AND CARVED IMAGES. 



In portions of the INIississippi Valley specimens of rude statuary 

 have been found, and further south in Mexico and Central America 

 large slabs occur covered with sculpture. 



