CANNONBALL RUIN— description of, 30 structural features of, 42 CASTLES, structural features of, 40 CAVES— apparently used for storage, 60 walled-up, 59 CEMETERIES. _See_ BURIAL PLACES. CEREMONIAL ROOMS, Hopi and Zuñi, not true kivas, 71 CHACO CANYON RUINS, comparative age of, 72 CIRCULAR RUINS— distribution of, 31 structural features of, 31 CLIFF-DWELLERS— culture of, 9 region occupied by, 9 CLIFF-DWELLINGS— architectural features of, 37 classification of, 15 double, 38 in Lost Canyon, 40 small, in the McElmo region, 37 COMMUNAL DWELLINGS, 71 preceded by “small house”, 70 social conditions indicated by, 69 CONSOLIDATION OF UNITS, process of, 74 CORN, CHARRED, found embedded in slag, 60 DAVIS TOWER— ground plan, 55 location of, 55 DEPRESSIONS INDICATING KIVAS, 42 DOVE CREEK RUINS, 28 EIGHT MILE RUIN, masonry in, 41 EMERSON, J. W., description of ruin by, 34 EMERSON RUIN, description of, 33 ENTRANCES— to kivas, 42 to towers, 42 walled-up, 57 ERODED BOWLDER HOUSE, description of, 49 ESCALANTE AND DOMINGUEZ, manuscript diary of, 36 ESCALANTE RUIN, description of, 36 FAR VIEW HOUSE, a pueblo of pure type, 15, 16 GIBRALTAR HOUSE. _See_ STRONGHOLD HOUSE. GILA VALLEY COMPOUNDS, 71 allied to Mexican buildings, 67 GOODMAN POINT RUIN, description of, 17 GRASS MESA, cemetery on, 64 GREAT HOUSES— date of construction undetermined, 43 possible use of, 42, 76 structural features of, 40 HACKBERRY CANYON CLIFF-HOUSE, a “unit type”, 40 HACKBERRY CASTLE, description of, 52 HACKBERRY GROUP, elements composing, 74 HILL CANYON RUINS, 42 masonry of, 42 HOLLY CANYON— ground plan, 52 ruins of, 52 HOLLY CANYON GROUP, elements composing, 74 HOLLY HOUSE RUINS, description of, 53 HOLMES, W. H.— on probable use of towers, 42 on tower at Mud Spring, 20 report of, as reference work, 11 report on ruins by, 10, 11 slab inclosures described by, 62 HOLMES TOWER, description of, 58 HOPI CEREMONIAL ROOMS, not true kivas, 71 HORSESHOE HOUSE— compared with Sun Temple, 54 description of, 53 ground plan, 54 structural features of, 40 HOVENWEEP CASTLE— description of, 47 ground plan of, 47 HOVENWEEP DISTRICT— a proposed National Monument, 44 canyons of, containing ruins, 44 ruins of, 44 HOVENWEEP HOUSE, description of, 46 IMPLEMENTS, STONE, 67 INGERSOLL, ERNEST, newspaper article by, 11 JACKSON, WM. H.— report of, as work of reference, 11 report of, on ruins, 10, 11 slab inclosures described by, 62 JOHNSON RUIN, description of, 18