  We present an analysis of interstellar absorption along the line of sight to
the nearby white dwarf star HZ43A. The distance to this star is 68+/-13 pc, and
the line of sight extends toward the north Galactic pole. Column densities of
OI, NI, and NII were derived from spectra obtained by the Far Ultraviolet
Spectroscopic Explorer (FUSE), the column density of DI was derived from a
combination of our FUSE spectra and an archival HST GHRS spectrum, and the
column density of HI was derived from a combination of the GHRS spectrum and
values derived from EUVE data obtained from the literature. We find the
following abundance ratios (with 2-sigma uncertainties): DI/HI = (1.66 +/-
0.28) x 10^-5, OI/HI = (3.63 +/- 0.84) x 10^-4, and NI/HI = (3.80 +/- 0.74) x
10^-5. The NII column density was slightly greater than that of NI, indicating
that ionization corrections are important when deriving nitrogen abundances.
Other interstellar species detected along the line of sight were CII, CIII,
OVI, SiII, ArI, MgII, and FeII; an upper limit was determined for NIII. No
elements other than HI were detected in the stellar photosphere.
