Chicago became the epicenter of the railway industry in part because it could generate and keep huge quantities of ice. Individual ice houses in Chicago held up to 250,000 tons of ice. Before ice, in hot weather milk (which came out of the cow warm, of course) could be kept for only an hour or two before it began to spoil. Chicken had to be eaten on the day of plucking. Fresh meat was seldom safe for more than a day. Now food could be kept longer locally, but it could also be sold in distant markets. Chicago got its first lobster in 1842, brought in from the East Coast in a refrigerated
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