THE LIGNITIC STAGE. 



BY 



Gilbert D. Harris. 



PART I. 



STRATIGRAPY and PAlvBONTOlvOGY (Pi^I/BCY- 



PODA.) 



SUMMARY OF CONTENTS. 



Preliminary Considerations. 



Page. 



Divisions of the lyignitic 4 



Aim and scope of this work 5 



Collection of fossils, field notes etc., on 

 which this work is based : The Cornell Uni- 

 versity expedition of i8g^ ; the Cornell University 

 expedition of i8g6 ; T. H. A Id rich's collections of 

 fossils and drawings ; the atithors works and field 

 notes on this stage in Arkansas and Alabama 5-6 



SECTION I. STRATIGRAPHY 6-36 



Texas : Rio Grande, Colorado River, Brazos 

 River, East of Brazos River 6-10 



