Subtracting the sum of these effects from the total phenomenon, there remains c, which now, without any fresh experiment, we may know to be the effect of C. This Method of residues is in truth a peculiar modification of the Method of Difference.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill
But as we can never be quite certain of this, the evidence derived from the Method of residues is not complete unless we can obtain C artificially and try it separately, or unless its agency, when once suggested, can be accounted for, and proved deductively, from known laws.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill
Even with these reservations, the Method of residues is one of the most important among our instruments of discovery.
"A System Of Logic, Ratiocinative And Inductive (Vol. 1 of 2)"
John Stuart Mill