XII. TYPES OF DISTRIBUTION. 509 



of western longitude be mentioned as tlie limit for plants 

 of the Germanic tj'pe. No definite range of altitude, nor 

 of proximity to mountains, can be laid down as a positive 

 rule of separation between plants of the Highland and 

 Scottish types. Equally impossible is it to apportion the 

 provinces between thetj'pes; several being represented in 

 each province. But accepting the initial letters as they 

 were applied in the ' summary of distribution,' chiefly on 

 the detail of facts in the three preceding volumes, and 

 before the succeeding lists in this volume had been fully 

 made out, they are found to apportion the species thus : — 



Briiish type 

 English type 

 GennLinic type 

 Hij;bland type 

 Scottish type 

 Atlantic type 

 Inlermediate t. 

 Local, Duu'ntful 



The names are here placed in a series according with the 

 number of species primarily assigned to the several types. 

 It will be observed that the numbers of those secondarily 

 so assigned do not run regularly. The average for the 

 second column would be rather above one-third of the 

 numbers stated in the first column. The first figure in 

 the second column is much below that average ; and it 

 could scarcely be otherwise. It has been shown that 495 

 species are quite absent from North Britain ; and 146 

 species are equally absent from South Britain. None of 

 these could be assigned even secondarily to the British 

 type. Nor of course could any of the 532 species pri- 

 marily so assigned. And after deducting these from the 

 whole flora, there remains only a fragment or scanty 

 number, among which to find species inclining to the 

 British type sufliciently to demand the addition of the 



