"The present vast extent and rapidly increasing growth of the commerce
of Chicago render it a matter of absolute necessity, in which not
only Illinois, but also a number of her neighboring States are deeply
interested, that her harbor should be kept in the best and most secure
state of improvement, so as always to afford, during the season of
navigation, a safe and easy entrance and departure for vessels drawing
at least twelve feet water.

"The States which are thus directly interested in the port of Chicago
are New York, Pennsylvania, Ohio, Michigan, Indiana, Illinois,
Wisconsin, and Minnesota. The shores of all these are washed either by
Lake Michigan or the other Great Lakes, with which Chicago has a direct
and very extensive commerce through the St. Clair flats. The other
States and Territories, which do not reach to the Great Lakes, but which
are nevertheless greatly interested in the preservation of Chicago
harbor, are Iowa and Missouri, and Nebraska and Kansas. A very large
portion of the wheat and other grain produced in those last-mentioned
States and Territories will be brought by railroads to the port of
Chicago, to be shipped thence to the Eastern Atlantic markets.

"The average amount of duties received annually at the Chicago
custom-house for three years, 1853, '54, and '55, was $377,797.86. The
imports at Chicago for 1855 were,--

By lake shipment, $100,752,304.41
" Illinois and Michigan Canal, 7,426,262.35
" Railroads, 68,481,497.90

Total imports in 1855, $196,660,064.66