Far-infrared spectroscopy of galaxies: the 158 micron C(+) line

The C II 158-micron fine structure line in six gas rich galaxies was investigated. These data are combined with other measurements of the C II line (in various galactic sources) and are compared to studies of the CO J 0 rotational line at 2.6 mm, the H I 21-cm line, and the far-infrared continuum emission in the same objects.