"94 MK. A. K. COOMARASWAMY ON [Feb. I903, 



(2) Pink marble from Port Abhuinn (see map, fig. 2, 

 p. 93). — This rock much resembles the marble from Balephetrish 

 Quarry. It consists of calcite, generally very fine-grained, the result 

 of shearing and strain, the effects of which are well displayed ; a few 

 larger individuals are stretched out, bent, and twinned (PI. VII, fig. 2) ; 

 occasional grains have been preserved un crushed where protected by 

 silicates, in the manner described by Prof. Bonney. Coccolite, green 

 in hand-specimens, very pale in sections, is abundant ; rounded 



Fig. 3. — Limestone, with inconspicuous foliation, and abundant 

 forsterite weathered out on the surface. Fields south-east of 

 Balephetrish Bill. (About -| nat. size.) 



wmwm 



Ethel jM. Coomaraswamy photo. 



[Sahlite, treniolite, mica, and spinel also occur, very sparingly, 

 on this specimen.] 



grains of orthoclase are common ; a decomposed mineral, which is 

 probably scapolite, occurs ; and there are tiny grains of sphene 

 sparsely scattered through the rock. The same rock, thoroughly 

 mylonized, and containing blocks of gneiss in the crush-breccia 

 (fig. 5, p. 99), is of a grey colour, and has a smooth, flinty, conchoidal 

 fracture. 



(3) Grey marble from south side of field, south-east of Bale- 

 phetrish Hill (fig. 3). — Here the carbonate-matrix is less broken down 

 than in the other types described ; the cleavage-faces of carbonate- 

 crystals can be clearly seen on a freshly-broken surface. Micro- 

 scopic examination shows ,,that much of the carbonate-matrix is, 

 however, as usual, very fine-grained an$. compact ; the larger grains 



