The galactic distribution of 77 discrete
sources of cosmic radio radiation has been examined. It is found that the
distribution can be explained on the assumption that there are two major
classes of source, one having a high degree of galactic concentration and the
other having a random distribution. The possible identification of the sources
with various types of astronomical object is discussed, and it is concluded
that, although some of the evidence is suggestive, it is insufficient for any
positive conclusions to be formed.