Corrigenda

In the paper by Z. Skorko-Trybuła and Z. Boguszewska, Mikrochim. Acta [Wien] **1976 II**, 335, the following corrections should be made.

Page 338, line 20:
for “About 30% distillation gives 80—100% boron recovery”,
read “Triple distillation gives 80—100% boron recovery”.

Page 338, 4 lines from foot:
after the sentence “The distillation flask was heated ... till 7—8 ml of solution remained in the distillation flask.”,
add “The distillation was repeated twice more, each time after addition of 10 ml of methanol to the liquid in the flask.”

Page 336, line 12:
for “Dibenzoylmethane, $2.5 \cdot 10^{-3} M$”,
read “Dibenzoylmethane, $2.5 \cdot 10^{-4} M$”.

In the paper by T. P. Hadjiioannou and M. M. Timotheou, Mikrochim. Acta [Wien] **1977 I**, 61, the following corrections should be made.

Page 62, line 3 from top:
write “sharp concentration changes and therefore sharp”
instead of “— sharp concentration changes and therefore — sharp”.

Page 65, line 2 from bottom: write “AuI” instead of “AsI”.

Page 128, line 9 from bottom: write “subtracted” instead of “subtracted”.

Page 130, line 13 from top: write “$10^8 M^{-2}$” instead of “$10^8 M^{-1}$”.

Page 132, line 11 from top: write “$1.5 \times 10^{-7}$” instead of “$1.5 \times 20^{-7}$”.