Agallochum is a fragrant wood obtained from Aloexylon Agallochum, a leguminous tree of eastern Asia, and Aquilaria Agallocha, a large tree inhabiting north-east Bengal, abounding in resin and an essential oil which yields a perfume used as incense. Research Agallochum
Dikamali is a resin exuding from Indian trees of the genusGardenia, a solution of which was formerly used to dress wounds and open sores. Research Dikamali
Frankincense is a name given to the oleo-resinous exudations from different species of conifers. American frankincense is obtained as a soft, yellow, resinous solid, with a characteristic turpentine odour, from Pinus Taeda. Another kind is exuded by the spruce fir, and forms a soft solid, the colour of which varies from white to violet red. From this Burgundy pitch is prepared by melting in water and straining through a cloth. The frankincense employed in religious ceremonies (also called also incense and olibanum) is a gum-resin obtained from Boswellia thurifera (or serrata), a tree somewhat resembling the sumach, belonging to the Amyridaceae, and inhabiting the mountains of India. It comes in semi-transparent yellowish tears, or sometimes in masses and possesses a bitter and nauseous taste, and is capable of being pulverized. When burned it exhales a strong aromatic odour, on which account it was much employed in the ancient temples, and still continues to be used in Catholic churches. Research Frankincense
Ganja was originally the Indian name for the dried shoots of the female hemp plant which have hashishresin on them. Today it is a Jamaican slang expression for cannabis and hashish. Research Ganja
Gum-resins are solidified juices obtained from plants. They contain a gum, which is soluble in water, and a resin, which dissolves in spirit, so that the body usually is nearly quite soluble in dilute alcohol; but there are usually present in addition essential oil, and a variety of impurities. The gum-resins have frequently a strong and characteristic taste and smell. They are solid, opaque, and brittle. The common gum-resins are aloes, ammoniacum, asafoetida, bdellium, galbanum, gamboge, myrrh, olibanum, opoponax, sagapenum, and scammony. Research Gum-Resin
Arbor Vitae is the name of several coniferous trees of the genus Thuja, allied to the cypress, with flattened branchlets, and small imbricated or scale-like leaves. The common Arbor Vitae (Thuja occidentdlis) is a native of North America, where it grows to the height of about 14 metres. The young twigs have an agreeable balsamic smell. The Chinese Arbor Vitae (Thuja orientalis), common in Britain, yields a resin which was formerly thought to have medicinal virtues. Research Arbor Vitae
Arnica is a genus of plants of the natural order Compositae, consisting of some twelve species, one of which is found in Central Europe, Arnica montana (leopard's bane or mountain tobacco), but is not a native of Britain. It has a perennialroot, a stem about 60 cm high, bearing on the summit flowers of a bright-yellow colour. In every part of the plant there is an acrid resin and a volatile oil, and in the flowers an acrid bitter principle called arnicin. The root contains also a considerable quantity of tannin. A tincture of it is employed as an external application to wounds and bruises. Research Arnica
Abbreviations
Research Agallochum 
