This section is from the book "The Engineer's And Mechanic's Encyclopaedia", by Luke Hebert. Also available from Amazon: Engineer's And Mechanic's Encyclopaedia.
A transparent resinous juice, flowing either naturally or artificially, by making incisions from a variety of unctuous trees, as the larch, pine, fir, etc. The essential oil distilled from this resin is called spirit, or oil of turpentine.
 
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