502 X. GENEEAL REMARKS. 



is also traceable among some of tlie austral* which extend 

 to more northerly latitudes than 54. It will be recol- 

 lected, that a like tendency was made apparent by the 

 treble column of figures set after the names of plants in 

 the ' census of species,' where many of the sub-provincial 

 figures were widely unequal for the eastern and western 

 sides of England ; others being nearly or quite equal for 

 both sides, opposite the same name. The large group of 

 austral species accordingly admits of distinction into three 

 types, by the severance of the less numerous Atlantic and 

 Germanic types (western and eastern) from the prevailing 

 English type. 



Lastly, many species are restricted to single or very 

 few provinces, as is shown in the lists by the paucity of 

 their corresponding provincial nos. These constitute the 

 so-called Local type of distribution ; but they resemble 

 each other only by the small extent, and not by the geo- 

 graphical position, of their areas. Several of them can be 

 assigned with some confidence to the otlier more true 

 types. For instance, all the truly mountain plants dis- 

 tinguished by the no. or figure 15 only might properly 

 enough be assigned to the Highland type. In turn, aus- 

 tral plants distinguished hj the figures 3 or 4 only may 

 nearly all of them be united with those of the Germanic 

 type. And such as are distinguished by the figures 1 or 5 

 only may mostly be assigned to the Atlantic type. In- 

 deed, these assignments of the local plants were fre- 

 quently indicated by the aiDpro]priate initials in the sum- 

 mary of distribution either primarily or secondarily. 



In this manner, through the arrangement of the species- 

 areas into series and groups connected with latitude and 

 elevation, and more sparingly with longitude, we can 

 again arrive hy a somewhat ditferent route at the types of 

 distribution explained in volume first. And it will now 



