PRUSSIA.

In Prussia the number of messages transmitted in 1866, the last year of which we have data, was 1,964,030, and the gross receipts were 1,275,785 thalers, making the average cost per message seventy cents in our currency. Prussia had in that year a population of 17,740,000, and the area of her territory was somewhat less than the New England States and New York. Distance being regarded, the Prussian rates were at that period double our own.