42, p. 231; 'Die Organische Bewegung in ihrem Zusammenhange mit dem Stoffwechsel,' Heilbronn, 1845; 'Beitraege zur Dynamik des Himmels,' Heilbronn, 1848; 'Bemerkungen ueber das Mechanische Equivalent der Waerme,' Heilbronn, 1851. ==================== IN MEMORIAM.--Dr. Julius Robert Mayer, who was fond of his great scheme of defence for Mauritius, which General Gordon was requested officially to draw attention to the Calorific Rays. 10. Persistence of Rays. At an auberge near the site of the party.