“There is no uniformity in the rates. They are often less to a
distant station than to an intermediate one on the same line. An
estimate of the average rates, and of the annual number of messages
transmitted has been made by ascertaining the rates to seventy-one
stations at different distances from Boston, and arranging them in
four different classes.”
Mr. Hubbard groups his American distances into classes of 500, 1,000,
1,500, and 2,000 miles; while his English classes embrace those of 100
and under, 200 and under; over 200, and to Ireland.