Beschreibung:

i. On the diagrammatic and mechanical representation of propositions and reasonings. [in:] The London, Edinburgh and Dublin Philosphical Magazine, and Journal of Science. Fifth Series. Vol. X, No. LIX, July 1880, pp.1-18. London: Taylor and Francis, 1880, 8vo, bound with other issues in volume X, later blue cloth, new endpapers, (bought from Chaucer Head, Presteigne, 2002), [T&W V9] ii. Catalogue of a collection of books on logic presented to the library. Cambridge: Cambridge University Press, 1889, 8vo, (book label of Alan Wright Romsey, Hampshire; bought from Roger Gaskell, Warboys, 1993, Catalogue 6, item 92), [T&W V8