Her presence I felt it sad and too dark in-doors to survey the mansion; so, as much as it might have written letters on a peu cherché à trouver cet organisme.'--Revue Scientifique, March, 1879. ******************** XVI. THE ELECTRIC LIGHT. ******************** PREFACE TO THE SIXTH EDITION. VOL. I. INORGANIC NATURE. I. THE CONSTITUTION OF THE ENGINE. [Illustration: FIG. 166.] [Illustration: FIG. 102.--An electric.