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Published online by Cambridge University Press: 03 November 2016
page 289 note * Mathematical Gazette, XXIV (1940), 9-14.
page 289 note † Principles of Geometry; in particular Vol. I (Cambridge 1922) , pp. 70 et seq.
page 290 note * See, e.g., Principles of Geometry, Vol. II, p. 213, and Hudson, KUmmer's Quartic Surface (Cambridge, 1905), pp. 1-3.
page 290 note 4 That this syzygy is not used implies that the configuration is properly one belonging to space of four dimensions.