92 ME. E. B. BAILEY OX THE STEUCTUEE OF [vol. Ixxviii, 



Aletamorpliisiii. 



The metainorpliism of the South- West Highlands is too wide 

 and speculative a subject to be dealt with here in anything more 



Fig. 3. — JlefcnnorjyJu'sm of nappes. 



''+ + -•. 



METAMORPHIC SCALE 



._Mica Inconspicuous 

 ca. Conspicuous 



MicdwitKJ Mica ^witK 

 AlBite Garnet 



[The nappes, in descending- order, are lettered: L = Loch-Awe Nappe; 1= 

 Iltay Nappe; B=Ballacliulish Nappe; A=Appin Nappe. The meta- 

 morphic scale adopted refers only to the condition of normal grey 

 pelitic sediment.] 



than the merest outline. The suggestions offered below will, it is 

 hoped, be amplified on some future occasion : — 



(1) Fig. 3 furnishes a graphical statement of the metamorphism of normal 

 grey pelitic (or semipelitic) sediments in the South-West Highlands. 



