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Haematoxylum campechianum (blackwood, bloodwood tree, bluewood, campeachy tree, campeachy wood, campeche logwood, campeche wood, Jamaica wood, logwood or logwood tree) [2] is a species of flowering tree in the legume family, Fabaceae, that is native to southern Mexico, and introduced to the Caribbean, northern Central America, and other localities around the world.
The wood of this tree is used in the making of bows for stringed instruments. [4] The tree yields other valuable products and has been exported for several centuries. It was included in the London Pharmacopoeia of 1740 , which listed logwood tea as being effective against tuberculosis and dysentery . [ 5 ]
The black wood at left shows unusual mineralization with chalcocite and other sulfide minerals. The blue-green stains are from oxidation of the chalcocite to azurite and malachite. Petrified wood forms when woody stems of plants are buried in wet sediments saturated with dissolved minerals.
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The wood first came to the notice of Europeans with the beginning of Spanish colonisation in the Americas. A cross in the Cathedral at Santo Domingo , bearing the date 1514, is said to be mahogany, and Philip II of Spain apparently used the wood for the interior joinery of the palace El Escorial , begun in 1584. [ 32 ]
A broader definition of portolan chart accepts any sea chart or atlas that meets the following series of stylistic requirements: drawn by hand, with a network of rhumb lines that emanate from the center of hidden circles, focused on the coasts and islands, with place names written perpendicular to the coastline on the land side and with sparse ...
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