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HARTLEY, David. Observations On Man, His Frame, His Duty, and His Expectations. In Two Parts.
London: Printed by S. Richardson; For James Leake and Wm. Frederick..., 1749. In two volumes. First edition. 8vo., recently rebound with dark brown calf spines, marble boards, raised bands, gilt, leather spine labels, (xx), iv, (5)-512; (xvi), iv, (5)-455, (456 blank), (11)pp index. Very minor scattered foxing in the index otherwise a fine copy.
David Hartley [1795-1757] English philosopher, founder of the associationist school of psychologists. Originally intended for the Church, Hartley instead took up the study of medicine, practicing as a physician in Newark, London, and finally Bath. The above work "Observations on Man" was published in 1749, three years after Conillac's "Essai sur l'origine des connaissances humaines", in which similar themes are expounded. The work is divided into two parts: the first dealing with the frame of the human body and mind, and their mutual connections and influences; the second with the duty and expectations of mankind. His two main theories are the doctrine of vibrations and the doctrine of associations. Hartley tell us that his physical theory was drawn from certain speculations as to nervous action which Newton had published in "Principia". With his physical theory, Hartley gave the first strong impulse to the modern study of the intimate connection between physiological and psychical..."