INDEX 



Abbott, W. L., remains of extinct rodents 



found by 104 



Acknowledgments for aid 17 



Adams, Captain, copper prospecting by 237 



Agricultural products, Provinces of Azua and 



Barahona 198 



Agua Montilla, location of 192 



Alberti y Bosch, N., fossils found by 54 



Alluvial deposits, character and distribu- 

 tion of 175, 185, 202 



Alpargatal, location of 195 



Tertiary rocks exposed near 206 



Altamira, Eocene rocks and fossils found 



near 58, 59, 105 



Alta Vela, geography of 48-49 



Amber, deposits of 244 



Amores, E. M., translation by 14 



Amphibolite schist, description of 85 



Andesites, descriptions of 86, 87 



Andesitic tuffs, descriptions of _ 88 



Andres Bay, geographic features near 48 



Angostura, fossils found near 163-164 



indications of petroleum near 219 



Ansonia sugar plantation, beds penetrated by 



drill at 222 



Aplite, description of 86 



Areal geology, Azua and Barahona provinces, 



description of 203-227 



Arenosa, Tertiary limestone near 183 



Argillite, occurrence of 83 



Arroyo Blanco, Cevicos limestone in 63, 64 



Oligocene fossils found in 110 



Arroyo Barranca, Oligocene rocks and fossils 



found in „ 64, 110 



Arroyo Clavijo, conglomerate exposed in 54-55 



Arroyo Guananitos, basal rocks exposed in.... 51 



features of _ 31-32 



Arroyo Guanito, Oligocene tuffs in 172 



Arroyo Hondo, Oligocene rocks in 62 



Arroyo Jerguen, Oligocene rocks and fossils 



found in 64, 110 



Arroyo la Sulsa, surface water from, analysis 



of 250 



Arroya las Lavas, Mao Adentro limestone 



and fossils in 73 



Miocene fossils collected in 101, 151-153 



structure in 78 



Arroyo Lima, rocks in 212 



Arroyo Milac, Tabera formation near 61 



Arroya Palma Dulce, indications of petro- 

 leum near 219 



Arroyo Quita Coraza, springs in 192 



spring water from, analysis of 194 



Arroyo Salado, oil seepage in 225 



rocks and fossils found in and near 155, 



157-162, 199, 212 

 view of tilted beds of limestone in (PI. 



XX, B) 226 



water from, analysis of 252 



Arroyo Santa Capuza, spring water from, 



analysis of_ _ _ 253 



Arroyo Santa Cruz, Miocene or older fossils 



found in 155, 157-162 



Artesian water, conditions favoring occur- 

 rence of 177, 178-179 



Augite andesite, tests of, as road metal 247 



Azua, artesian wells near 254 



coralliferous limestone near 223 



Eocene rocks near 60-61 



faulting near 60-61,78-79 



geology at and near 222-223 



location, surroundings, and population 



of 195 



oil field at 223-225,243 



oil found at, quality of 224-225 



oil seepage east of 225-226 



rainfall at 197 



roads and trails from and to 196-197 



salt springs near 192 



Azua Plain, features of _ 37-38 



Azua-Bani road, fossils collected on 54 



Azua Province, Eocene rocks and fossils 



found in 60, 106, 199 



geography of _ 188 



Miocene or older fossils found in 155-162 



Oligocene fossils found in 63, 



108-109, 111-112, 200 



roads in 196-197 



springs in, analyses of water of 193-194 



stratigraphic section in 207 



Azua and Barahona provinces, alluvial de- 

 posits in 202 



areal geology of 203-227 



map showing (PI. XV) 186 



climate and vegetation in 197-198 



" coast limestone " in _ 202 



drainage of 189-194 



Eocene rocks in 199-200 



geologic formations in, table showing 199 



geologic structure in 203 



geology of — 199-227 



geography of 186-198 



gypsum deposits in, summary con- 

 cerning 227 



igneous rocks in 202-203 



metalliferous deposits in, summary con- 

 cerning 227 



Miocene rocks and fossils found in 201 



oil and gas in, summary concerning 226 



Oligocene rocks in 200-201 



people of 196 



Pliocene (?) rocks in 201 



population of 194-195 



pre-Tertiary formations in 199 



products of 198 



Quaternary sediments in _ 202 



roads and trails in 196-197 



salines in, summary concerning 227 



Tertiary sedimentary rocks in 199-201 



towns and villages in 194-196 



Bahoruco, copper stains noted near 222 



Bahoruco mining concession, basis of 222 



255 



