[Illustration: PLATE-IRON ROLLING-MILLS--P. 379.]

Shall we take a glance at a historic mill? The best location for
such a structure where water-power just met tide-water, and shallops
drawing eight feet could load up at the shore, was selected in 1762
for mill-buildings which still stand, and which were for many years
the most famous in the country, regulating the price of grain for
the United States. The business soon overflowed, and necessitated the
building, in 1770, of the structures represented in the engraving on
page 371, the whole group, on the two sides of the stream, being under
one ownership, and known as "Lea's Brandywine Mills." Hither would
come the long lines of Conestoga wagons, from distant counties, such
as Dauphin and Berks, with fat horses, and wagoners persuading them
by means of biblical oaths jabbered in Pennsylvania Dutch. From these
mills Washington removed the runners (or upper stones), lest they
should be seized and used by the British, hauling them up into Chester
county. When independence was secured the State of Delaware hastened
to pass laws putting foreign trade on a more liberal footing than
the neighbor commonwealths, thus securing for her mills the enviable
commerce with the West Indies. Much shipping was thus attracted to
Wilmington, and the trade with Cuba in corn-meal was particularly
large. It was found, however, that the flour of maize invariably
rotted in a tropical voyage, and thereupon the commodity known as
kiln-dried corn was invented at the Brandywine Mills: two hundred
bushels would be dried per day on brick floors, and be thought a large
amount, though the "pan-kiln" now in use dries two thousand in the
same time. The dried meal was delivered at Havana perfectly fresh, and
pay received, in those good old days of barter, in Jamaica rum, sugar
and coffees. In the old times flour was heaped in the barrels and
patted down with wooden shovels: then, when full, a cloth was laid