412 X. GENERAL REMARKS. 



same ten orders occur, though variously placed. Be- 

 tween 13 and 18 the four orders again correspond, and 

 are also differentlj^ placed. Three more lines present the 

 same three orders for hoth countries. And with the 

 change of Euphorbiacecs in Britain, for Violacece in Scan- 

 dinavia, the succeeding seven lines again present seven 

 same orders, ending with Campanulacece on the last line 

 for both countries ; the position of this last-named order, 

 however, depending on the union with it of Lobeliacece. 

 The high position of Leguminiferce, and the low position 

 of JiincacecB, may be held indicative of the diier and 

 warmer climate of Middle Europe, when compared with 

 Scandinavia or Britain. But the higher position of 

 Primulacece in Middle Europe will not admit of the same 

 explanation ; the order there rising above its position for 

 Britain or Scandinavia, on account of its many alpine 

 species, which do not extend to the more arctic moun- 

 tains. 



4. The Vegetation of Britain. 



Vegetation and^ora, though not seldom employed with 

 a mixed or interchanged meaning, ought to be held non- 

 sjmonymous words. The ^ora is an aggregate or totality 

 of the species in any given country. The vegetation is an 

 aggregate or total mass of its individual plants. In floral 

 statistics, the rarest and least seen species counts as an 

 equal unit with the commonest and most conspicuous. 

 In vegetal statistics (if a contrasting word may be made) 

 size and frequency are also taken into account. In the 

 flora of Britain, the Epipogium aphyllum and Orchis 

 maculata count as equals. In the vegetation, the half- 

 dozen or fewer examples of the former — all hitherto 

 found — ought to count at a very low figure in comparison 

 with the many thousands of the latter which are to be 



