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Published online by Cambridge University Press: 24 October 2008
P. 323, line 3 from bottom:
for [8mn−7m−7n+n] read [8mn−7m−7n+4].
P. 328, lines 16 and 18:
for (6mn−6m−6n+l) read (6mn−6m−6n+4).
line 17,
in formula ending … +13m+13n−9) read …+13m+13n−8).
Vol. 43 (1947), pp. 321–8.