Several topics concerning the light hadron spectrum are discussed. Fla
vor symmetry breaking effects and the problem of quenched chiral logar
ithm are examined with pion mass data for the Kogut-Susskind quark act
ion, and Light meson decay constants for the Wilson action calculated
with non-perturbative renormalization constants are discussed. Results
for quark masses are also given both for the Kogut-Susskind and Wilso
n actions.