Theory of Dark Matter
  We discuss the hypothesis that the constituents of dark matter in the
galactic halo are Primordial Intermediate-Mass Black Holes (PIMBHs). The status
of axions and WIMPs is discussed, as are the methods for detecting PIMBHs with
emphasis on microlensing. The role of the angular momentum J of the PIMBHs in
their escaping previous detection is considered.
