SERPENTINE OF THE CONTINENT. 101) or greenish calc-spar; crystalline grains of oxide of iron and iron-pyrites sometimes occur. The rock resembles the opliicalcite of Maurins in the Hautes Alpes. 1 Egypt. Serpentine was worked in ancient times in Upper Egypt, and along the road from Keneh to Kosseir (Pierre de Baram). It was employed by the ancient Egyptians, 2 and specimens brought from Egypt may probably be observed in Italy at the present day. Spam. In the Sierra Nevada serpentine of a deep green colour, with crystals of diallage of a bright green, is obtained ; and at Saint-Jean, in the same range, an opliicalcite which was used by the Moors in the decoration of the Alhambra, and is of a kind almost peculiar to Spain, and called by Chateau ‘ ophicalce petrosiliceuse.’ 3 Ural Mountains. Serpentine is developed in huge masses amongst the crystalline and metamor phosed Silurian rocks of the Uralian Mountains throughout a large extent of their range from north to south. 4 Amongst other localities it is found not far from Miask, containing schillerspar and bronzite ; 5 near Kytschimsk containing gold; 8 also near Katheri- nenburg, Tschaikowski, 20 fathoms (120 feet) in 1 Delesse, quoted by Chateau, ii. 561. 2 Ibid. 3 Ibid. ii. 565. 4 Murchison, Siluria, 4th edit. 452, 14. 6 G. Rose, Journ. in the Ural, ii. 164. 0 Ibid.