4\ C 2 SANDA. GEOLOGY. 



absence is to be regretted, the funeral is still conducted 

 with appropriate decency. 



The structure of Sanda corresponds precisely to that 

 of the opposite shores of Cantyre; and, as in many 

 other similar situations, the geological continuity of the 

 strata between the two, serves to indicate the alterations 

 which have taken place in the sea line, and the en- 

 croachments of the ocean on the borders of the great 

 sestuary of the Clyde. The analogy in this respect 

 between Sanda and the other islands of this firth is very 

 obvious. 



The sandstone of which it is composed, is elevated 

 to the north, the dip being to the southward and varying 

 from fifteen to twenty degrees. It thus forms hills of 

 about 300 feet in height, which, on some of the shores, 

 are broken into cliffs of moderate elevation. One of 

 these, forms a very picturesque object, presenting a 

 natural arch of considerable dimensions. The rock is 

 reddish, and grey, and is interstratified with slaty clay 

 of various colours, but chiefly of a grey hue. It is 

 accompanied by beds of conglomerate similar to those 

 already described, and by a sandstone containing frag- 

 ments of clay slate, exactly resembling the well known 

 rock of Kingudie in Perthshire, so largely used in 

 buildings in the vicinity of London. The structure of 

 Sheep isle, and of the accompanying rocks, is precisely 

 similar to that of the principal island. 



