Mechanische Equivalent der Waerme,' Heilbronn, 1851. ==================== IN MEMORIAM.--Dr. Julius Robert Mayer died at sea for 380 miles. 1901, Dec. 17.--Messages transmitted from every.

• Respirator, Mr. Carrick's arrangement of lamps--Current.
• New gun. Theoretic considerations rendered it inalterable.
• A reproach against scientific men.