circular opening, Lecture Experiment.—The Ferrates. tion, the wind blowing across the chimney top so directs around which fits a funnel-shaped hopper, the open- BY C. L. BLOXAM. The ordinary prescriptions for preparing potassium the cowl shield as to produce a partial vacuum under ing in the bottom… … Oil on the Water. Another instance of the marked benefits resulting from the use of oil on troubled seas was afforded by which may be pulled up by a chain to allow the con- the recent experience of the steamship Werra, of the ward draught. Anaperturein the flange of the cowl tents of the hopper to…
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