economy, and, above all, the safety of the boats, would be vastly'increased. But there is another means of overcoming the difficulty, and of increasing the economy of these packets, viz: the employment of condensing engines, which would at once cut down tlle requisite i>fitial pressure 12 to 14 pounds per square incli, and by lesseningthe work of the boilers, permit a more perfect combustion of fuel. And although prejudice has done its utmost to prevent, or rather to postpone, in that section of the country, this improvement, high pressure engines will as eertainly be driven fl'om the Western rivers, at some future day, as they have been from the Lakes within the past few years. Their use on Lake Eri% which was formerly the .r~h,, forms now a bare exception. Yor the Journal of the ]"ranMin Institute.
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