p.222 The point indicated by $Q$ in fig.1  is not correct.

p.225 line -5 such that E(F_p) ...

p.229 between lines 4 and 5:
$$
{{p+q\delta}\over{r+s\delta}}\,=\,{{b+\sqrt{\Delta}}\over{2p}}
$$

p.230  $z_{i+1}=z_{i-1}-qz_i$

$q=\left[{{{\rm Re},\zeta_{i-1}}\over{{\rm Re},\zeta_i}}\right]$

p.231 $w\not=0$.

p.232 {{{\rm Re},\zeta_{i-1}}\over{{\rm Re},\zeta_i}}

p.234 line -8 $p'$ should be $p$

p.235 line -9 ... is a symmetric ...