Vol. 50.] OF THE INNER HEBRIDES — DISCUSSION. 231 



the present paper overwhelming evidence that the granophyre has 

 disrupted the gabbros. Photographs were produced in which the 

 light-coloured granophyre is seen to rise as a dyke through the dark 

 gabbros and in which the same structures are displayed as occur 

 along the margin of the main mass of granophyre and in the 

 so-called ' inclusions.' Specimens were also exhibited showing 

 that in the body of the granophyre, and in the dykes which could 

 be traced diverging from it, the very same spherulitic and flow- 

 structures occur which Prof. Judd describes as characteristic of his 

 ' inclusions.' It had been shown in the paper that these ' in- 

 clusions,' instead of being irregular blocks, are really linear veins or 

 dykes with flow-structure parallel to their walls and enclosing 

 pieces of the surrounding gabbro. It had also been pointed out 

 that the remarkable banded structure of the complex series of 

 gabbros is truncated both by the main mass of granophyre and by 

 the apophyses from it. 



The Author had not criticized Prof. Judd's account of the micro- 

 scopic structure of the material of his ' inclusions.' He was even 

 willing to accept it as fairly accurate, with, however, the important 

 reservation of the alleged proof's of re-fasion. But no amount of 

 petrographical ingenuity could withstand the plain evidence in the 

 field that the granophyre sends offshoots across the gabbros. In 

 the face of this evidence it is mere waste of time and labour to 

 dispute about points of minute detail. 



