Published online by Cambridge University Press: 15 September 2014
The increased interest taken in Orthogonants during the period 1880–1900 is more than maintained in the period which we have now reached. Out of considerably more than 100 writings sought out and examined, as many as 65 have been found to deal directly with the theory of orthogonal substitution, and 35 to be more closely concerned with the practical applications of it. These numbers, 65 and 35, are what have to be set over against 38 and 12 in the earlier period referred to, note, however, at the same time being taken that the contrast is unfairly heightened by several papers of the first period, chiefly Magyar, having been received only in time to be joined with those of the second. These Magyar papers, it may be added, make also an appreciable contribution in the matter of quality.