The reference relates to resin from Scots pine trees resin being used for making candles in preference to using animal fat. Trees for Life An area of surviving Caledonian pinewood in the Highlands ...
Only the sap wood of the tree is penetrated by this method ... great that within the next fifteen or twenty years the resin yielding pine forests of the South will be wholly depleted.
Their trunks often have a craggy, uneven appearance, and there’s a simple way to tell if a tree you’re looking at is a sugar pine: Smell it. Sugar pines have an unusually sweet-smelling resin ...