In 1875. Ten groups of flasks opened on the side of Virchow. Besides the danger of suffocation. Helmholtz on Hay Fever. VI. VOYAGE TO ALGERIA TO OBSERVE THE ECLIPSE. VII. NIAGARA. VIII THE PARALLEL ROADS OF GLEN ROY. IX. ALPINE SCULPTURE. X. RECENT EXPERIMENTS ON FOG-SIGNALS. XI. ON THE FOOTPLATE OF A BATTLE-SHIP.