Books › The Violin: A concise exposition of the general principles of construction.., 1871 › scan 171
Scan 171
The Violin: A concise exposition of the general principles of construction.., 1871
8 lines. Read by computer on 28 September 2026. No printed page number was found. See the scan on archive.org.
1in a close vessel. Amber, after having been kept in a close vessel at a high temperature, becomes completely soluble in alcohol.
3BENZOIN, or BENJAMIN, is a somewhat costly gum resin, and is but little used in varnishes. It is brittle, breaks with a conchoidal fracture and fuses at a gentle heat. It readily dissolves in alcohol, to which it imparts an agreeable odour. It is obtained from a tree which grows abundantly in the islands of Sumatra and Java, also in Cochin China and on the coast of Malabar. The white tears, or those pieces possessing the least colour, should preferably be selected for varnish-making.
5CANADA BALSAM is obtained from a tree of the same name, which is very abundant throughout Canada. It is perfectly transparent, having an agreeable odour, and is wholly soluble in rectified oil of turpentine.
7COPAL is a gum resin which exudes naturally from a tree which grows in New Spain and the East Indies. In durability it ranks second to amber as a varnish, and when of excellent quality, is too hard to be scratched by the nail. It is only partially soluble in alcohol, but is freely so in ether. Fused copal is completely soluble in boiling alcohol or spirits of turpentine. Copal is freely soluble in oil of rosemary, or spike-lavender, and the addition of any of those oils to alcohol promotes its solubility. It is also wholly dissolved in oil of turpentine, which has been ozonised or exposed for a length of time to the light. The clearest pieces are to be selected in the preparation of varnish.
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