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See also:BALSAM (from Gr. f &X raµov, through See also:Lat. balsamum, contracted by popular use to O. Fr. basme, mod. Fr. bdme; Eng. See also:balm)
, a See also:term properly limited to such resins or oleo-resins as contain benzoic See also:acid or cinnamic acid or both
.
Those balsams which conform to this See also:definition make up a distinct class, allied to each other by their See also:composition, properties and uses
.
Those found in See also:commerce are the See also:balsam of See also:Peru, balsam of Tolu, liquid storax and See also:liquidambar
.
Balsam of Peru is the produce of a lofty leguminous See also:tree, Myroxylon Pereirae, growing within a limited See also:area in See also:San See also:Salvador, Central See also:America and introduced into See also:Ceylon
.
It is a thick, viscid oleo-See also:resin of a deep See also:
It is a soft resinous substance, with a pleasing balsamic odour,, especially after it
has been kept for some See also:time
.
It is used in See also:medicine as an See also:external application in some parasitic skin diseases, and internally as an expectorant
.
An analogous substance is derived from Liquidambar Altingia in See also:Java
.
Liquidambar balsam is derived from Liquidambar styraciflua, a tree found in the See also:United States and See also:Mexico
.
It contains cinnamic acid, but not benzoic acid
.
Of so-called balsams, entirely destitute of cinnamic and benzoic constituents, the following are found in commerce: See also:Mecca balsam or See also:Balm of See also:Gilead, from Commiphora opobalsamum, a tree growing in See also:Arabia and See also:Abyssinia, is supposed to be the balm of Scripture and the OaXo-aµov of See also:Theophrastus
.
When fresh it is a viscid fluid, with a penetrating odour, but it solidifies with See also:age
.
It was See also:regal-See also:deal with the utmost esteem among the nations of antiquity and to the See also:present See also:day it is peculiarly prized among the See also:people of the See also:East
.
For balsam of See also:copaiba see COPAIBA
.
Under the name of See also:wood oil, or Gurjun balsam, an oleo-resin is procured in See also:India and the Eastern See also:Archipelago from several See also:species of Dipterocarpus, chiefly D. turbinatus, which has the odour and properties of copaiba and has been used for the same purposes
.
Wood oil is also used as a See also:varnish in India and forms an effective See also:protection against the attacks of See also: It is a very transparent substance, some-what fluid when first run, but thickening considerably with age, possessed of a delicate yellow colour and a mild terebinthous odour . It contains 24 % of essential oil, 6o % of resin soluble in See also:alcohol, and 16 % of resin soluble only in See also:ether . Its See also:chief uses are for mounting preparations for the See also:microscope and as a See also:cement for See also:glass in See also:optical See also:work . The See also:garden balsam is an See also:annual plant, See also:Impatiens balsamina, and the balsam See also:apple is the See also:fruit of See also:Momordica balsamina, nat. See also:order See also:Cucurbitaceae . |
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