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Papers of Augustus Sauerbeck, 1893 and 1895, comprise two letters to Sir Guilford Molesworth; the first thanks him for a letter and two tables of production figures and discusses his own work: 'If you examine the real reduction in cost - not by opening up new countries - but by real scientific improvement, there is probably no important article in which the reduction has been so great as in the case of gold, where it pays now if you get 1/2oz or even less out of a ton of ore', 28 August 1893. The second letter refers to a forthcoming article on prices, to be published in the March issue of the Journal of the Statistical Society, 5 April 1895.