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102 SERPENTINE. polished by the beat of the Atlantic waves, and in contrast with the white sands of the shore, is ren dered stih more striking and characteristic. 1 Lizard serpentine is now much used in some modern churches, for ornamental fonts, pulpits, and small shafts and pilasters, as well as for vases, tazze, and slabs for inlaid work. 2 Blocks 7 to 8 feet long and 2 to 3 feet in diameter have been obtained from the quarries. 3 Anglesea. Greenish serpentine, sometimes slightly reddish, occurs amongst the metamorphic schists of Anglesea, at Llanfechell and Ceryg-moelion. A brec- ciated, serpentinous marble, with veins of white calc- spar, is found at Tre-gala, near Llanfechell. Ireland. The serpentine of West Galway, called ‘ Connemara marble,’ is justly prized as an orna mental stone. It occurs in irregular beds, amongst the metamorphic schists and quartzites, which are regarded by Sir Roderick Murchison to be of Lower Silurian age. 4 There are two varieties of the ser pentine : one from Letterfrack is of a dense, opaque, and uniformly deep green colour, and appears to be derived by a metamorphic process from horn 1 Descrip. Guide Hus. Prac. Geol. 3rd edit. p. 21. 2 In the Museum of Practical Geology there is a tazza of reddish serpentine, the shaft of which is entwined by a dolphin of green steatitic serpentine, both from the Lizard, and made by Mr. Pearce, of Truro. 5 Gwilt, Encyc. Arch. edit. 1867, p. 497. 4 Siluria, 3rd edit.