----------------- HES POSTING ----------------- I would be surprised if Carroll alluded to Jevons's Notice. There was only a short summary published shortly after and the notice itself was in print in 1866. Carroll might have equally well referred to psychological/physiological literature around at the time (eg. Bain's The Senses and the Intellect or his The Emotions and the Will) in which recourse to pleasure-pain balancing was widespread. Harro Maas ------------ FOOTER TO HES POSTING ------------ For information, send the message "info HES" to [log in to unmask]