Search Results for: Articles of natural gums
of resin in trees is to seal wounds and defend against bacteria, fungi and insects).
by some string instrument makers (violin, viola, cello and bass) as a varnish ingredient. a tincture of propolis may be used to seal the surface of newly made violin family bridges , and may be used in the maintenance of the bores of pan flute tubes. propolis was purportedly used by antonio stradivari...
https://en.wikipedia.org/wiki/Propolis