Researches on magnetism, electricity, heat, light, crystallization, and chemical attraction in their relations to the vital force / by Karl, baron von Reichenbach, Ph. Dr. ; tr. and ed. at the express desire of the author, with a preface, notes, and appendix, by William Gregory ; with three plates and twenty-three wood-cuts ; parts I and II, including the second edition of the first part, cor. and improved.