(London: J.C. for W. Crook, 1678).

VERY RARE AND HOBBES’ FINAL WORK, PRODUCED AT AGE 90. Hobbes considered himself to be primarily a scientist and philosopher and only consequently a theorist of civil and ecclesiastical authority. His reputation, however, both in his own day and ours, is inextricably linked to his progressive theories in civil and church polity, despite more practical accomplishments in optical theory.
DECAMERON PHYSIOLOGICUM was the final form of his mechanistic system of natural philosophy and the final word in the Wallis-Hobbes feud. "Hobbes last work of all was a new set of dialogues on physical questions, in the fashion of the earlier ones, but now with a stroke added at Wallis's doctrine of gravitation in the "De Motu". And a demonstration of the equality of a straight line to the arc of the circle was, of course, thrown in at the end, to show him true as ever to the desperate purpose that had maintained the long quarter of a century of strife." (C.G. Robertson)"
On Page 116 Hobbes references Kepler, with whom he is in agreement, in a statement giving the age of the Earth. There are discussions on magnetism, vacuum, motions of air and water, gravity, optics and more. Item #23478

The First Edition of Hobbes’ final work. With the folding plate, which is frequently lacking and a figure within the text. 8vo, in full calf of proper period style, the binding with raised bands ruled in blind and a black morocco label lettered and with decorate ruled frame in gilt viii, 136, (7) (1) pp. A very fine and handsome copy, complete with the license leaf, folding plate and all ads, rarely found such. The text very clean and fresh.