[23] Principles of Psychology, vol. I, p. 488.
[24] The next two paragraphs repeat, for purposes of the present discussion, what we have already noted in a different context. See p. 88 and p. 99.
[25] Psychology, vol. II. p. 342.
[26] Bain, The Senses and Intellect, third American ed., 1879, p. 492 (italics not in original).
[27] Compare the quotation from Bain on p. 155.
[28] The term general is itself an ambiguous term, meaning (in its best logical sense) the related and also (in its natural usage) the indefinite, the vague. General, in the first sense, denotes the discrimination of a principle or generic relation; in the second sense, it denotes the absence of discrimination of specific or individual properties.
[29] A large amount of material illustrating the twofold change in the sense of words will be found in Jevons, Lessons in Logic.