2S 



644 E. 0. ULRICH INDEX TO "REVISION OF PALEOZOIC SYSTEMS*' 



Page Plate 

 Holston formation 41 -±. 453. 513. 557 27 



marble r ^ 539 r 5 7 556 



Honaker limestone -~ 



Honey Creek member 24, 642, 661. 666 



Hopkinton dolomite 



Horizontal movements due to compressive forces 



Hormotoma 



cf . anna 663 



rmesia (Billings) 657.658 



ef . arternesia 664 



gracilens - : 



669 



Hoyt limestone 612; 615 27 



Hunton formation 558 2> 



3ffl 



lee-sheets. Cause or" 353 



Ulsenurus 630 



Illinois. Paleozoic formations of . . 27—2 



Inconsistencies in drawing boundaries 586 



Indexieal value of species in distinct provinces 514 



Indiana basin formations 



Indiana dermatoides ("W 617 



piriformis Matthew 617 



secunda Matthew 617 



Indian Creek section 636 



Indigenous faunas. Modifications of 



Initial der jliarities of 454 



Inland migration of Appalachian belts of folding 435 



Cause of 439 



transmission of suboceanic thrusts 447 



Instability of continent 4»>5 



Intercontinental correlation 4/2 



Intel-fingering of formations 557 



Overlaps of 4" 



Intersystemic intervals 3- 



Intervals. Intersystemic 345 



Introductory f acies of faunas and deposits 



Invasions from Gulf of Mexico 



Marine 344 



Iowa. Formations of 27,28 



Iron Ridge ore bed 561 



Isochilina cf. armata 671 



Mdyl •' 669 



•earing on production of glacial periods of 353 



Isostatic equilibrium 



Isotelus '505 



ei& as 



Ithaca ov 



Izard limestone 401 523 27 



