The springs of conduct : an essay in evolution / C. Lloyd Morgan. Morgan, C. Lloyd (Conwy Lloyd), 1852-1936. Mind and body. 170 MOS With an errata slip and a 40-page List of Kegan Paul, Trench & Co.'s publications . The catalogue has printing date 5.84 at foot of title. London : Kegan Paul, Trench & Co., 1885. 1885. 1885 Text viii, 317, 40 p. ; eng