  Nucleosynthetic signatures in common between the gas responsible for the high
redshift Lyman alpha forest and a subsample of extremely metal poor stars are
found. A simple mass loss model of chemical evolution with physically motivated
parameters provides a consistent picture in which the gas is identified with
that lost by supernova-driven winds during the first generation of star
formation. Substantial mass loss occurs which can account for a diffuse IGM
with up to 80% of the total baryon content and a peak [C-O/H] abundance of
\~-2.9. This mass loss component differs from one produced later during galaxy
formation and evolution that contributes to a circum-galactic medium (CGM). The
CGM was shown earlier to have a mass of ~10% of all baryons and peak [Fe/H]~-1.
