258 



INDEX. 



Condit, D. D. — Continued. 



Miocene formations discriminated by.... 65 



nickel deposits examined by 243 



observations made at Sanchez by 181 



observations on thickness of Tabera 



formation made by „ 61 



Oligocene rocks noted by 62 



report on La Perseverancia nickel de- 

 posit by 231 



sample of nickel ore taken by 234-235 



section of Gurabo formation measured 



by 70 



specimens of rocks collected by 60 



Condit, D. D., and Ross, C. P., Cerros de Sal 



formation named by 75 



chapter on geology of provinces of 



Barahona and Azua by 186-227 



chapter on economic geology by 228-254 



Las Matas formation named by 76 



Miocene beds described by 65-66 



Constanza, basal rocks exposed at 52 



geography and geology of region near.... 205 



trail from_ 35 



Constanza trail, basal rocks exposed along.... 52 



description of 33-35 



reference to 44 



Constanza Valley, description of 34 



Cooke, Wythe, chapter on geography by 26-49 



chapter on stratigraphic and structural 



geology and geologic history by 50-82 



cited on stratigraphic significance of 



Orthaulax 96 



copper and iron ores examined by 229 



description of geography by 26-49 



fossils collected by 106, 110, 



111, 112, 113, 114, 115, 126-129, 

 130-145, 151-153, 155-162, 165 



fossils identified by 102 



itinerary of _ 12-13 



observations in Province of Samana 



made by 181 



oil seepage on Arroyo Salado visited 



by 225-226 



work near Azua done by 186 



Copey, Miocene (?) deposits near 174 



fossils found near 154, 165 



Copper ores, assays of 241 



deposits of, near Hatillo 230 



San Cristobal mining district, report 



on 236-242 



summary account of 243 



Coral reefs, Pleistocene or Recent, distribu- 



bution of 184-185 



Corals common to Miocene beds in Cuba, 

 Jamaica, and Dominican Republic 



(table) 99 



Cordillera Central, amber in _... 244 



areal geology of 204-206 



basal complex in 50-53 



drainage of 41-42 



Eocene(?) limestones in 58 



general features of 30-31,169-170 



gold in 242 



igneous rocks in 202-203 



Cordillera Central — Continued. 



iron ores in 243 



iron and copper ores along north border 



of - 22S-231 



platinum in 242 



Pliocene (?) gravel in 175 



rocks for making concrete available in.. 245 



streams rising in 41-42 



structure in foothills of 176 



trails across _ 31-37 



view in (PI. XVI, B) 188 



Cordillera Septentrional, Cretaceous rocks in 54 



drainage of 42-43 



Eocene rocks in 58-60 



position and general features of 27-28 



rock suitable for mixing concrete found 



in 246 



streams rising in 42-43 



view of south front of (PI. II, A) 28 



view of summit of (PI. II, C) 28 



Correlation, section on 91-94 



table showing 57 



work on 15 



Correlation table showing American and 

 European equivalents of Tertiary 



formations 57 



Cotui, Eocene rocks near 59 



faulting near 78 



iron and copper ores near 228-231,243 



Cretaceous fauna, discussion of 53-55 



Cretaceous system, rocks and fossils of..._ 53-56 



Cruz de los Caminos, Eocene fossils found 



near 106 



Cul de Sac district, Eocene rocks in 200 



volcanic crater in 210 



Cushman, J. A., acknowledgments to 89 



fossils examined by 54, 59, 60, 105 



Dajabon, faulting near 78 



fossils found near 165 



Oligocene limestone near 172 



Pliocene(?) gravel near 175 



quartz diorite near 171 



structure near 78, 176 



Dall, W. H., cited on correlation of certain 



Miocene formations 100 



Miocene fossils described by 147 



Damajagua, Cretaceous rocks near 54 



Eocene rocks near 58, 59 



fossils found near 105 



structure at 78 



Darton, N. H, fossils collected by 155, 157-164 



Delmonte, Manuel, discovery of nickel ore by 233 



mining concession granted to 231 



Depression and elevation, evidences of 82 



Diabase, description of 86 



Diaz, , San Francisco concession trans- 

 ferred to 237 



Dike rocks, description of 85-86 



Diorite, description of 84, 85 



intrusion of, date of 80 



Diorite porphyry, description of 86 



Dixon, A. F., cited on structure from Neiba 



to Rio Yaque 214 



Drainage, description of 41-43 



