  We discuss the observable consequences for the detection of galaxies in the
X-ray bandpass resulting from a peak in the cosmic star-formation rate at a
redshift > 1. Following White & Ghosh, we assume a large evolution in the
X-ray/B luminosity ratio at z ~ 0.5-1.5 resulting from the X-ray binaries that
have evolved from stars formed at z > 1-2. Using the HDF-N redshift survey data
and the locally observed X-ray/B luminosity ratio as a guide, we estimate a
median X-ray flux (2-10 keV) on the order of 8 x 10^-18 ergs/s/cm^2 for
galaxies in the HDF-N, which is consistent with a signal derived from a
stacking analysis of the HDF-N Chandra data by Brandt et al. (2001). We also
predict the number counts in deep X-ray surveys expected from normal galaxies
at high redshift.
