An X-Ray Scan of the Galactic Plane from UHURU

This is the first of four Letters reporting preliminary results from the first of NASA's small astronomy satellites, Uhuru. The satellite is designed to conduct a survey of the X-ray sky in the 2-2() keV energy range to an ultimate sensitivity of about 5 X 1 the flux of the Crab Nebula. In this first Letter we report on a scan of the galactic plane in which we see twenty-nine discrete sources, of which seven have not been reported previously.