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Published online by Cambridge University Press: 03 November 2016
page no 320 note * The equations given are not actually those of Dirac, but are certain linear combinations of them. They are based on equations (31) of p. 71, Vol. II, of the book under review. The Ψ’s are likewise linear combinations of Dirac’s Ψ’s.
page no 322 note * Vol. I, pp. 52, 53.
page no 322 note † Vol. II, p. 91, footnote.