The roots of this plant, which grows on the sandhills, are dug up and heated in the fire. The outer skin [from which a black pitchy substance oozes] is then scraped off. This substance, mixed with some ashes, constitutes the resin with which [for example] stone-axe heads are hafted (or fastened) to their handles.
this is extracted from a bush that grows on the sandhills. It is used for the same purpose as in [1].