48 



INTRODUCTORY EXPLANATIONS. 



Prunella vulgaris. 



Salix fusca. 



Bellis pereniiis. 



Veronica officinalis. 



Carex stellulata. 



Juncus supinus. 



Solidago virgaurea. 



Linum catharticum. 



Lysimacliia nemoruin. 



Fragaria vesca. 



Pteris aquilina (1470 feet). 



Epilobium alsinifolium. 



Myrica Gale (1,350 feet). 



Populus tremula. 



Gentiana campestris. 



Aira caiyophyllea. 



Rosa spinosissima (1,300 feet). 



Genista anglica. 



Spartium scoparium( 1,982 feet). 



Betula alba. 



Carex pallescens. 



Carduus palustris. 



Stellaria holostea. 



Veronica officinalis. 



Trientalis europaea. 



Hypochaeris radicata. 



Trifolium repens. 



Pteris aquilina. 



Galium verum. 



Epilobium angustifolium. 



Veronica Chamaedrys. 



Rosa spinosissima. 



Aira caryophyllea. 



Myeica Gale (1346 feet). 



On compaiing these two lists together, it will be seen that 

 there is a considerable approximation towards a correspon- 

 dence between the two series of names ; although they do 

 not succeed each other with exactness or complete uni- 

 formity. In both hsts the Calluna stands above the Jimi- 

 perus ; in tinn, the latter is above Erica Tetralix ; the 

 Erica is placed above Genista anghca ; and the Genista is 

 above Pteris aquihna or Mpica Gale. In addition to this 

 general correspondence, in the heights attained by one 

 species compared with others, there is also an approxima- 

 tion towards agi-eement in the absolute altitudes to which 

 they ascend on different aspects of the same moimtain. 



If the reader will now look back to the list of species 

 noted in the descent from Ben-na-muich-dhu, he will see 

 precisely the same order of sequence in the names of the 

 shrubs distinguished by capital letters. At the same time, 

 he will observe some wide variations between their absolute 

 altitudes. The Jmiiperus and Myrica are noted at nearly 



