The beautiful faience of Damascus and Rhodes is covered with the silicious slip or glaze, the colours being rich blues, produced by cobalt, turquoise and green, by cobalt and copper, and purple by the use of manganese; and then covered with an Alkaline glaze. In the Rhodian Ware the same scheme of colour prevails, except that the purple is replaced by a fine opaque red of great body, called Rhodian red, produced from Armenian bole. On the Italian Maiolica, with its tin enamel and plumbeous glaze, there are fine blue, turquoise and green, but red is very poor in colour, and is generally replaced by rich yellow from antimony, and orange from iron. This white tin enamel was undoubtedly introduced into Europe by the Moors, as some tiles in the Alhambra date from 1273-1302. A large number of bowls and dishes, called Samian Ware, of Roman importation, have been found in England. The paste is usually of a fine sealing wax red, with a good glaze. These bowls are enriched with a series of horizontal bands, containing the festoon, the scroll, birds, animals, and figures. The bands or friezes are often divided by the traditional egg and tongue moulding (fig. 1). Clay moulds, impressed with stamps, were made and then fired. The red paste having been pressed into the mould, the interior was smoothly turned in the lathe. A mould of this character was found at York in 1874, so it is possible that some of this ware was made in England, by Roman potters. Roman pottery has also been found at Castor, near Peterborough, doubtless made at the former place, kilns for firing having been found on the same site. This Castor ware is usually brown, with a black glaze, being ornamented with indented tool marks, and raised slip patterns of pipe clay (fig. 3). Many Roman dishes and vases of a dark grey colour, ornamented with incised lines and raised bosses of clay, have been found in the Upchurch Marshes in Kent. Little artistic pottery of the mediæval period however is known to exist. Early in the 13th century beautiful encaustic tiles were made for the great monasteries, abbeys and cathedrals. About 1500, the production of tiles was introduced into Holland, quantities of small blue and white ones decorated with scriptural subjects, being made at Delft, and thence exported to England for the lining of fire places, &c. Some fine painted tiles or “Azulejos” were made at Valencia about the 17th century.