Eugen von Böhm-Bawerk was a central figure in the windy discussions of the theory of capital and interest which occupied a prominent place in economic literature in the 1890's. The two volumes of his Kapital und Kapitalzins were translated into English in 1890 and 1891, which meant that his views were generally known to English-speaking economists. An American student of economics, Charles Whitney Mixter, who was aware both of Böhm-Bawerk's writings and of his high prestige, was therefore elated to find that an earlier and obscure Scotch-Canadian writer named John Rae appeared to have foreshadowed Böhm-Bawerk's theory of capital in some important respects. Mixter somewhat hastily announced his discovery of “A Forerunner of Böhm-Bawerk” in an article with this title in the Quarterly Journal of Economics for January, 1897. Today this label would perhaps be regarded as faint praise and happily it was quite wrong. Mixter's error had arisen out of a misunderstanding of Rae's ideas and it was soon corrected, although not before it was repeated by Irving Fisher.
Mixter's find was enthusiastically acclaimed by Fisher who wrote in February, 1897:
No economist who is interested in the theory of capital in any of its aspects can afford longer to let Mr. Rae's investigations go unread. His work is a magnificent specimen of true scientific method and a rare example of orderly and convincing exposition. His style too is easy, forceful and captivating and his fund of ready illustrations commands instant admiration. Not the least remarkable feature of this many-sided work is the clear conception of sociology, or “Natural History of Men,” which it contains. It is difficult to realize that Mr. Rae wrote before that science was definitely founded. In short, the “New principles of political economy” is truly a masterpiece, a book of a generation or a century. It was written before the world was ready for such painstaking analysis. Now that its merits have been pointed out by Mr. Mixter, it is sure to be accorded a high place among the classics of economic science.