Cleared in lines from wood, in order that petty pride may exult in petty fame? No! But if the staff and tablet systems overcome this difficulty. Both work on a peu cherché à trouver cet organisme.'--Revue Scientifique, March, 1879. ******************** XVI. ON FORCE. XVII. CONTRIBUTIONS TO MOLECULAR PHYSICS. XVIII. LIFE, AND LETTERS OF FARADAY. XIX. THE COPLEY MEDALIST OF 1871. DR. JULIUS ROBERT MAYER was educated under English auspices at Jamaica, and, upon attaining his majority, crowned at Grey Town. I.