part 4] THE SCHISTS OF THE SCHICHALLION DISTRICT. 445 



mapped by Mr. H. H. Read would only be possible after a re- 

 examination of some of the intervening ground. He had not 

 ruled out the possibility that the boundary-line between the Grey 

 Schist and the Struan Flags on the eastern side of the Dalradian 

 area was a natural one, though he regarded the western boundary 

 as a folded line of movement. One part of the differences between 

 himself and Mr. Barrow might be overcome by supposing that the 

 Boulder Bed and White Limestone of the Schichallion area were 

 usually absent in the district between Braemar and Blair Athol. 

 This would imply that the Banded Series of the area that he had 

 mapped was the equivalent of Mr. Barrow's Honestone Group, 

 which it appeared to resemble. 



In reply to Mr. Green, he stated that, apart from its inter- 

 calations, the Banded Series of the district now described was very 

 easily distinguishable from any part of the Schichallion Quartzite. 



