288 MR. E. B. BAILEY OX THE [June I913, 



steeply inclined and often vertical, and their cleavage dips north- 

 westwards at angles ranging from 45° to 30°. The section is given 

 from north-west to south-east, without any suggestion as to the 

 order of original superposition : — 



Feet. 



Epidiorite 20 



Quartzose slates 15 



Epidiorite 4 



Slates ' 3 



Gritty limestone with large epidiorite-blocks 5 



Pure dark-grey limestone 20 



Similar limestone, except that it carries pebbles con- 

 sisting mainly of quartz : these pebbles are few and 

 scattered, and are at first small ; but, farther on, they 



measure as much as half an inch across 42 



Non-porphyritic epidiorite 40 



Gap with pure limestone outcrops 30 



Pure limestone, dark grey, bedding well preserved 3 



Breccia containing very numerous fragments of 

 fine-grained non-porphyritic epidiorite 

 in a limestone matrix, which weathers in honeycomb 

 fashion owing to an abundance of big crystals of black 

 calcite ; the matrix also contains numerous large 



grains of quartz 3 



Strongly pebbled dark-grey limestone 150 



Fig. 3. — Breccia containing epidiorite- fragments interhedded between 

 fine-grained limestone and gritty limestone. Limekiln, a quarter 

 of a mile due south of Fincharn Castle, eastern side of Loch Awe, 

 opposite Lnverliver. 



[The bedding is steep, the cleavage gently inclined north-westwards. 

 Length of exposure figured = approximately 20 feet.] 



The mode of occurrence of the breccia intercalated between pure 

 and gritty limestones is illustrated in the above sketch, fig. 3. 



On the two sides of Stronesker, which lies a mile and a half 

 •due south of the southern end of the loch, there are important 



