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 while, under my father’s direction, my studies were carried into the higher branches of analytic psychology. I now read Locke’s Essay, and wrote out an account of it, consisting of a complete abstract of every chapter, with such remarks as occurred to me: which was read by, or (I think) to, my father, and discussed throughout. I performed the same process with Helvetius de l’Esprit, which I read of my own choice. This preparation of abstracts, subject to my father’s censorship, was of great service to me, by compelling precision in conceiving and expressing psychological doctrines, whether accepted as truths or only regarded as the opinion of others. After Helvetius, my father made me study what he deemed the really master-production in the philosophy of mind, Hartley’s Observations on Man. This book, though it did not, like the Traité de Législation, give a new colour to my existence, made a very similar impression on me in regard to its immediate subject. Hartley’s explanation, incomplete as in many points it is, of the more complex mental phenomena by the law of association, commended itself to me at once as a real analysis, and made me feel by contrast the insufficiency of the merely verbal generalizations of Condillac, and even of the instructive gropings and feelings about for psychological explanations, of Locke. It was at this very time that my father commenced writing his Analysis of the Mind, which carried Hartley’s mode of explaining