DIAGRAM OF THE ALPINE REGION, 



AS REPRESENTED ON THE HIGHER MOUNTAINS OP SCOTLAND. 



Summit of Ben Macdhuie. 



ALT-ALPINE ZONE. 

 (900-800 ft. on Ben Nevis and Ben 

 Macdhuie Detritus, heaps of stones, 

 patches of snow in summer. Vege- 

 tation scanty — Arctic in character. 



Calluna vulgaris 



MID-ALPINE ZONE. 



(1000 feet on the higher ruts). 

 Precipices, tarns, steep ravines. 

 Rocks and boulders marked by glaciers 

 Vegetation plentiful — strictly Alpine. 



* Erica tetralix ceases at 2250 ft. 



SUB-ALPINE ZONE. 



(1000 ft. in all mountainous districts). 

 Heaths, turf bogs, lochs, boulders, moraines. 

 Vegetation abundant — less Alpine, partly lowland. 



1500 



* Upper limit of cultivation. 



LOWLAND REGION. 

 (Sylvatical Zone.) 



