638 E. O. ULRLCH INDEX TO 



Page Plate 



Didymograptus forcipiformis Rued 678 



nitidus Hall 677 



similus Hall 677 



Differential effect on strandline in continental tilting 542 



Differential oscillations of continental seas and interior land areas, 



Causes of 430 



Differential vertical movements of lithosphere 405 



Dikelocephalus 504, 630 



minnesotensis 615 



Discina 358 



Discontinuity of sedimentation 304 



Discordances of faunas, Causes of 303 



Discrimination of general earth movements 410 



Diplograptus cf . calcaratus priscus E. and W 678 



Diplograptus dentatus zone 652, 676, 678 



Displacements of the strandline 329 



Basis of stratigraphic classification 580 



Indications of negative 448 



Indications of positive 448 



of the strandline 329 



Distribution of thickest deposits 565 



Dixon formation . . 28 



Dolgeville shale . . 27 



Dome tilting illustrated in the peninsula of Florida 430 



Dominant species 508 



Lists of standard 299 



Dresbach sandstone and shale 27 



Dual nomenclatures 290 



Dubuque dolomite 



limestone 422, 525 



Duration of geologic ages, Bearing of diastrophic rhythm on 601 



Earth, Age of 349 



movements, General discrimination of 410 



Eccyliomphalus multiseptarius 658 



cf. triangulus 653, 658, 663 



Eccyliopterus cf . volutatus 662 



S P 664 



Echinoderms, Distribution of 501 



Echinosphaerites 326 



Echinospha?rites bed 321-327 



Economy member of Eden 297 



Eden deposits 567 



Economy member of 297 



fauna in well at Waverly, Ohio 362 



faunas 297 



formation, Extent of 310 



? ro "P 7.7.'.! ....... 569 



sandstone member 27 



shale. Ohio .7. 7 300,' 512, 521 27 



