Boutroux, Emile, 1845-1921 The contingency of the laws of nature / by Emile Boutroux ; translated [from the French] by Fred Rothwell - Chicago : Open Court Pub., 1916 - ix, 196 p., [1] leaf of plates : port. ; 22 cm. Translation of: De la contingence des lois de la nature Subjects--Topical Terms: Philosophy of natureFree will and determinism Dewey Class. No.: 113