⁶Li abundances as measured and corrected for depletion. Abundances from this paper and from Hobbs & Thorburn (1997) are combined. Filled circles denote measured abundances and upper limits: the large circles represent the detections of ⁶Li and the small circles the upper limits. Open circles are the abundances after correction for depletion. Triangles denote results for the two N‐rich subdwarfs HD 74000 and HD 160617. In (a) the depletion corrections are taken from Pinsonneault et al. (1992), and in (b) from B. Chaboyer (1994; 1997, private communication). The Be abundances are represented by the mean relation reported by García López et al. (1998a); Be abundances for HD 84937 and BD 26° 3578 are given by filled squares. The Li elemental abundances are represented by crosses. The ⁶Li abundance expected from spallation is shown by the broken line labeled "⁶Li(sp)."