The Relation Between Forestry and Geology 

 in New Jersey* 



CONTENTS. 



L Existingf Conditions. 



Object and Scope of this Report. 

 Method of Investigation Pursued. 

 Facts Ascertained. 

 Discussion of the Facts. 



11. Historical Development. 



Preliminary Discussion. 

 Mesozoic Time. 



Triassic Period. 



Jurassic Period. 



Cretaceous Period. 

 Neozoic Time. 



Tertiary Period. 



Quaternary Period. 

 Concluding remarks. 



I. Existing Conditions. 



OBJECT AND SCOPE OF THIS REPORT. 



The problems of plant distribution, or, in other words, the 

 reasons why certain classes, families, genera or species of plants 

 occupy certain regions, have long received attention from those 

 who have observed the facts. If the earth as a whole be viewed 

 in connection with the entire vegetable kingdom, it is at once 

 apparent that the most obvious factor in limiting distribution is 

 climate, and that isothermal lines are closely identified with 

 lines of plant limitation. If smaller geographic areas and 

 smaller aggregations of plants be studied, however, it will at 

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