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E. B. Bailey — The Sgitrr of Eigg. 



Fig. 1. Sketch-map of the south-western part of the Isle of Eigg, on the scale of 

 2 inches to the mile. After Harker [3, p. 44] . 



The felsite shown in this map is quite distinct from the felsite sheets shown in 

 Fig. 2 and described in the text. It forms low ground along with the basalt 

 lavas. The dolerite sheets, indicated by black, are regarded by Harker as sills, by 

 the writer as mainly the interior portions of lava streams. 



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