There cannot be a question that by far the simplest plan would consist in the evaporation of the sea-water itself in large quantities, preserving the resulting salt in closely-stopped vessels to prevent the absorption of moisture, and vending it in this form to the consumer; the proportion of this dry saline matter being fifty-six ounces to ten gallons of water, less three pints. This plan was suggested by Dr. E. Schweitzer, for the extemporaneous formation of sea-water for medicinal baths. Mr. H. Schweitzer writes me that he has for many years made this compound, in accordance with his cousin's analysis. The proportion ordered to be used is six ounces to the gallon of water, and stirred well until dissolved.