Online Encyclopedia

DAMMAR, or DAMMER (Hind. damar=resin,...

Online Encyclopedia
Originally appearing in Volume V07, Page 789 of the 1911 Encyclopedia Britannica.
Spread the word: del.icio.us del.icio.us it!
DAMMAR, or DAMMER (Hind. damar=resin, pitch), a resin, or rather series of resins, obtained from various coniferous trees of the genus Dammara (Agathis). East Indian dammar or cat's eye resin is the produce of Dammara orientalis, which grows in Java, Sumatra, Borneo and other eastern islands and some-times attains a height of 8o–loo ft. It 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 communities 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 Zealand (Australian dammar), is produced by Dammara 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 commerce. Of these the principal are black dammar (the Hindustani kala-damar), yielded by Canarium strictum, and white dammar, Indian copal, or piney varnish (sufed-damar), the produce of Vateria indica. Sal dammar (damar) is obtained from Shorearobusta; Hopea micrantha is the source of rock dammar (the Malay dammer-batu) ; and other species yield resins which are similarly named and differ little in physical properties.
End of Article: DAMMAR, or DAMMER (Hind. damar=resin, pitch)
[back]
JANOS DAMJANICH (1804–1849)
[next]
DAMMARTIN

Additional information and Comments

There are no comments yet for this article.
» Add information or comments to this article.
Please link directly to this article:
Highlight the code below, right click and select "copy." Paste it into a website, email, or other HTML document.