Yol. 69.] 



LOCH AWE SYSTCLINE (ARGYLLSHIRE). 



285 



genetically connected with the lavaform varieties. This conclusion 

 is likely to meet with fairly general acceptance in regard to the 



Fig. 1. — Pillow-lava, Rudha Barain, western slwre of Loch Awe, 

 1 mile east of Inverliver. 



/* l - 







§1 I " l 



[The ' pillow ' showing concentrically-arranged vesicles measures 1 foot in 

 length by 9 inches in breadth. The interspaces between the ' pillows ' are 

 occupied by sandy slate.] 



majority of the intrusions, hut it will be readily understood that 

 penological comparison of metamorphic igneous rocks inter se is a 



