z. Phys. B -Condensed Matter 69, 239-242 (1987) 1. Abstract: last sentence to read:"From such a comparison it is clear that a simple trial function with only one variation parameter involving the screening of the positive charge of the nucleus gives stray results." 2. Section 2, page 241 last sentence to read: "This result is inferior to 0.0555R by about 1.4% [14], but (20) implies an unbound extra electron." 3. Section 3 page 242 first and second sentences to read:"Examining the theoretical analyses in this paper there is poor evidence to fuel the assumption that screening plays a major role in D-(and H-) formation. A simple normalised hydrogenic wave function with the effective nuclear charge as the only variational parameter gives an ionization energy which disagrees with that extrapolated from experimental measurements."