17

22

disparateness of the three inferential processes
is truly set forth in many of my early
papers; such as one on the Classification
of Arguments in the Proceedings of the American
Academy of Arts and Sciences for 1867, another
on the Validity of the Laws of Logic in the Journal of
Speculative Philosophy for 1869, and a third in the
Popular Science Monthly for August 1878. But in subsequent
studies of the nature of Induction which are
embodied in my paper on Probable Inference in
the Johns Hopkins Studies in Logic, my mind became
so preoccupied with Induction that I forgot
the peculiarities of Abduction and in that paper
I confused it with a particular variety of
Induction. Nevertheless, even In that essay, I