TABLE OF CONTENTS. 



PART I. 



Page. 



The Lignitic Formations of North America : 



$1. Areal Distribution 1 



§ 2. Stratigraphy of the Lignitic and its Capacity for Combustible Mineral 10 



i 3. The Age of the Lignitic, indicated by its Geological Distribution and its Fauna 21 



PART II. 



Description op the Tertiary Fossil Plants 33 



CRYPTOGAMS. 



Fungi 33 



Lichenes 35 



AlgOB 37 



Characese 43 



Musci 43 



Lycopodiaceae 44 



Filices 49 



Ehizocarpae 04 



CALAMARI.ai. 



EquisetacejB 67 



PH.SNOGAMS. 



GYMN0SPERM.a;. 



CycadinesB 70 



Zamieae , 70 



conifer a;. 



Cupressiucae 72 



AbiotinesB 75 



TaxinesB 84 



MONOCOTYLEDONES. 



FLUMACE.a! 



Gramineae SO 



Cyperaceae 'J2 



CORONARI.4;. 



Smilaceae ■ 9^ 



SCITAMINB.^. 



Zingiberaceae 95 



Musaceae 96 



XIII 



27893 



