The magnet served three interests of Restoration mechanical philosophers: it provided a model of cosmic forces, it suggested a solution to the problem of longitude determination, and evidence of its corpuscular mechanism would silence critics. An implicit condition of William Gilbert's ‘magnetic philosophy’ was the existence of a unique, immaterial magnetic virtue. Restoration mechanical philosophers, while claiming descent from their compatriot, worked successfully to disprove this, following an experimental regime of Henry Power. Magnetic philosophy lost its coherence and became subsumed (...) in the study of effluvia. This contradiction of a distinct, yet mechanical magnetic philosophy came to a head in 1684 in an argument between Robert Hooke and Martin Lister. An effluvial explanation of magnetism introduced great complexity to the North-seeking behaviour of compass needles, and undermined the already troubled longitude programme. Thus magnetic philosophy no longer furthered the interests which had maintained it, and it was abandoned. (shrink)

It is indeed a pleasure to introduce this collection of essays that honor one of the world's leading scholars in the field of utopian studies. I have known Lyman Tower Sargent since 1986, when upon moving to St. Louis I was delighted to discover that we lived a short distance away from each other. Our collaboration on a variety of projects has continued ever since then, most notably in the series Utopianism and Communitarianism, published by Syracuse University Press; as intellectual (...) advisers to the New York Public Library/Bibliothèque Nationale exhibition Utopia, which took place in 2000; in the two editions of The Utopia Reader ; in many years of joint "skills"... (shrink)