12 



Merriam Geographic Distribution of Life. 



Date A uthor 



1863 

 1863 

 1866 

 1866 

 1870 

 1871 

 1873 

 1874 

 1876 

 1882 

 1883 

 1883 

 1884 

 1884 

 1886 

 1887 

 1887 

 1889 



Verrill 



Binney (W .G.) 



Baird 



Grisebach 



Brown 



Allen. 



Cope 



Porter 



Wallace 



Engler 



Packard 



Jordan 



Sargent 



Drude 



Hartlaub 



Heilprin 



Brendel 



Ridgway 



Alleghanian 



Interior 



Eastern 



Forest 



Appalachian 



Eastern 



Eastern 



Forest 



Alleghanian 



Appalachian Province 



Eastern 



Atlantic Region 



Deciduous Forests . . . 



Virginian 



Alleghanian 



Alleghanian 



Mixed Forest 



Eastern Province. . 



Central or Middle Division. This division extends from the 

 eastern border of the great plains to the Sierra Nevada and Cas- 

 cade Mountains. It was first proposed by Agassiz in 1854, under 

 the name ' Table-land Fauna or Fauna of the Rocky Mountains.^ 



The extent to which it has been recognized will appear from 

 the following table : 



Date Author 



1854 Agassiz 



1859 Le Conte 



1863 Binney (W. G.) 



1866 Baird 



1866 Grisebach 



1873 Cope 



1876 Wallace 



1878 Allen 



1881 Gray 



1883 Packard 



1883 Jordan 



1S84 Drude 



1886 Hartlaub 



1887 Heilprin 



1887 Brendel 



1889 Kidgway 



Name given to region 



Table-land Fauna 



Central District 



Central Province 



Middle Province 



Prairie Region 



Central Region 



Rocky Mountain Subregion. 



Middle Province 



Central Province 



Central Province 



Central Region 



Montana District 



Rocky Mountain Region . . . 

 Rocky Mountain Subregion. 



Prairie Flora 



Rocky Mountain or Middle 



District. 



Rank 



Based on 



Animals ....... 3 



Insects 1 



Mollusks 1 



Birds 1 



Plants 1 



Repts. and batrs . 2 



Animals 2 



Animals 2 



Plants 1 



Animals 1 



Mollusks 3 



Plants 2 



Birds 2 



Animals 2 



Plants 1 



Birds . . 2 



