ACTINOLITE SCHIST. 315 



finition of both rocks is the same. It may also 

 be remarked, that it is often the repository of the 

 several varieties of the mineral of which it is prin- 

 cipally composed, and that it is generally easily 

 recognised by its green colour, as well as by the 

 peculiar properties of the characteristic mineral. 

 If mineralogists should finally think fit to consi- 

 der actinolite as a variety only, of hornblende, 

 actinolite schist must also be replaced among the 

 varieties of hornblende schist ; but as long as 

 these minerals continue to be distinguished as 

 species, it will be convenient to pursue the same 

 plan with respect to the rocks in question. 



SYNOPSIS OF ACTINOLITE SCHIST. 



FIRST DIVISION. 



Simple: of one ingredient 



A. .Actiiiolite under various appearances. 



a. Formed of distinct interlaced crystals 

 varying in size. 



