336 



INDEX. 



Jungle compared with bush, 178 f. 



and forest, 179 

 ease of Uvelihood in, 222 

 in Guatemala, 212 



relation to agriculture in Guatemala, 221 f. 

 changes in climate, 190 

 distribution of population, 181 

 Jurassic: 



Ammonites, distribution in, 281 

 CUmate of, 256, 281, 287 

 Climatic zones m, 281 

 Cool period in, 287 

 Faunas of, 281 

 Floras of, 281 

 Insects of, 281 

 Reefs in, 281 



Kabah, ruins of, 183, 229 



Kadapah system, 271 



Kaibab Plateau, 16 



Kamas Creek, terraces of, 26 



Kanab Canyon, 26 



Karoo formation, 267 



Karst, relation to vegetation, 179 



of Yucatan, 176 

 Katmai, eruption of, 250, 251 

 Katun, in Maya chronology, 227 

 Kern Lakes, 157 f. 

 Keweenawan formation, 271, 286 

 Kichankanab Lake, 185 

 Kin Ya'a ruins, 77 

 Kiva (see Religious structures). 

 Klamath Mountains, 281 

 Knowlton, on Triassic Soras, 280 

 Koppen, W., cited, 4, 237 

 Krakatoa, eruption of, 250, 251 

 Kullmer, C. J., cited, contribution by, 192, 193 ff. 



Labna, ruins of, 183, 229 



Lacustrine deposits of Mexico City, 97 f. 



plain of Mexico City, 97 ff. 

 Lahontan, Lake, 37 

 Lake at Aniraas, 70 

 Lakes of Guatemala, 211 

 Mexico, 95 ff. 



Fluctuations of, compared with trees in 

 California, 207 S. 

 La Luz, fault at, 33 

 Land bridges, 288 



climates of, 288 

 Lands, periodic flooding of, by oceans, 286 

 Lang Mountains, 70 

 Langhorn, Mr., 64, 55 

 Langiey, cited, 4 

 Laplacian theory, 265 

 Laramide Revolution, 283 

 Laziness in Yucatan, 180 

 Lee, W. T., cited, 28 

 Leiden plate, 228 

 Lias, cbmate of, 280, 281 



coal of, 281 



insects of, 281 



volcanic activity in, 280 

 Liassic climate, 256 

 Life, great destruction of, 287 



struggle of, under glacial climates, 266 

 Life thermometer, 287, 288 

 Lime habit, beginning of, 276 

 Lipalian era, 275 

 Lockyer, W. J. S., cited, 118, 120 

 Longevity, correction for, 127 

 Lowe, cited, 91 

 Lower Huronian: 



Limestones of, 275 

 Tillites of, 272, 296 



MacDougal, D. T., 2, 12, 21, 25, 61, 65 

 Magdalena River, terraces of, 26 

 trincheras of, 67 ff. 

 VaUey, 50 



Terraces of, 29 

 Magnetic phenomena and solar changes, 237 



variations, relation to cyclonic storms, 204 f. 

 Mahogany in Guatemala, 216 

 Maiak ruins, 62 

 Malaria, effect on cliildren, 181 



in Guatemala, 216 ff., 217 

 ravages of, 220 f. 

 Malarial fevers in forest vs. bush, 181 

 Man, effect upon growth of trees, 134 

 Mancos, cliff-dwellings at, 75 



Mathematical relation of rainfall and growth, 113 ff. 

 Mauritius changes of temperature at, 247 

 Maya civihzation: 



Condition at Spanish conquest, 184 

 Compared with Assyria, 184 



China, 184, 185 

 Egypt, 184 

 Contrasted with Asiatic civilization, 223 

 Origin of, 185 

 Maya chronicles, 226 



chronology, 227 f. 



history and climatic changes, 225 



sources of knowledge of, 226 f . 

 Mayas: 



Ancient civilization of, 182 

 Character of, 179 f. 

 Compared with Greeks, 184 



Contrast of civilization with that of Spaniards, 222 

 Effect of cool weather upon, 210 

 Handicaps of, 187 

 Hieroglyphics of, 185, 219, 226 

 Location of, 175 



Mental attributes of ancient, 187 

 Ori^ality of, 182 ff. 

 Racial features of, 219 

 Resemblances of modern and ancient, 183 

 Water supply of, 177 

 McAdie, M. G., cited, 159 

 Merida: 



Rainfall at, 178, 189 

 Wealth of, 182 

 Windmills at, 177 

 Yellow fever at, 181 

 Mesa Verde, 17 

 Mesas, origin of, 17 

 Mescalero Indian agency, 45 



Plateau, 37 

 Mesquite trees, 21 



Age of, 73 

 Mestizos of Yucatan, 179 

 Mexico: 



As a test case, 95 ff. 

 City, evidences of changes of climate, 95 

 founding of, 96 

 inundations of, 208 

 Climatic changes compared with California, 207 ff. 

 Dikes of, 207 ff. 

 Effect of climatic changes on seasonal precipitation, 



208 ff. 

 Ruins of northern, 65 

 Mejdium, cited, 237 



Meteorological ex-planation of climatic changes, 236 

 Migrations and changes of climate, 88 

 desiccation, 92 

 rainfall, 89 

 Miller, H. E., cited, 142 

 Milo, rainfall of, 159 

 Mindeleff, cited, 44, 49, 56, 91 

 Miocene: 



Alpine mountains in, 284 

 Climate of, 284 



