DAMMAR or DAMMER, a resin, or rather series of resins, obtained from various coniferous trees of the genus Agathis (Dam mara). East Indian dammar or cat's eye resin is the produce of Agathis Dammara, which grows in Java, Sumatra, Borneo and other eastern islands and sometimes attains a height of 8o—iooft. The resin oozes in large quantities from the tree in a soft viscous state, with a highly aromatic odour, which, however, it loses as it hardens by exposure. The resin is much esteemed in oriental com munities for incense-burning. Dammar is imported into England by way of Singapore; and as found in British markets it is a hard, transparent, brittle, straw-coloured resin, destitute of odour. It is readily soluble in ether, benzol and chloroform, and with oil of turpentine it forms a fine transparent varnish which dries clear, smooth and hard. The allied kauri gum, or dammar of New Zea land (Australian dammar), is produced by Agathis australis, or kauri-pine, the wood of which is used for wood paving. Much of the New Zealand resin is found fossil in circumstances analogous to the conditions under which the fossil copal of Zanzibar is obtained. Dammar is besides a generic Indian name for various other resins, which, however, are little known in western com merce. Of these the principal are black dammar, yielded by Canar ium strictum (family Burseraceae) and white dammar, Indian copal, or piney varnish, the produce of Vateria indica (family Dip terocarpaceae). Sal dammar is obtained from Shorea robusta; Symplocos micrantha is the source of rock dammar and other species yield resins which are similarly named and differ little in physical properties.