Note 254 — C. Third Section.
Elizabeth Sanderson Haldane translation
Leibnitzii Oper. T. II. P. I. pp. 214, 215, § 3; De ipsa natura sive de vi insita, § 11, p. 55; Système nouveau de la nature et de la communication des substances (Op. T. II. P. I.), pp. 50, 53.