Estimates are made of the expected gravitational radiation from the pulsars, assuming that they are either oscillating dwarf or neutron stars, or fast rotating binaries. It is concluded that a radiative Riemann tensor of magnitude 10-42 cm-2 may be expected on earth as a consequence of some of these assumptions. A large detector of the type already developed is likely to succeed in detecting a radiative Riemann tensor exceeding 10-42 cm-2 at pulsar frequencies. © 1968 The American Physical Society.