Great Chicago Fire

Despite a well known legend that the Great Chicago Fire was started by a cow kicking over a lantern in the barn owned by Mrs. O'Leary on DeKoven Street, historians now believe it was begun by Daniel "Pegleg" Sullivan, who first reported the fire. Prior to his death, Sullivan confessed to starting the fire.

The Great Chicago Fire did start in Kate O'Leary's barn around 9:00 p.m. on October 8, 1871. The summer had been hot and dry, only an inch of rain had fallen since July 4th of that year and a major fire a day earlier had left the water reserves dangerously low. When the fire was reported, neighbors hurried to protect the O'Leary's house from the blaze. High winds from the southwest caused the fire to ignite neighboring houses and move towards the center of Chicago. Between superheated winds and throwing out flaming brands, the fire crossed the Chicago River by midnight. The fire spread so quickly because of plank sidewalks, high winds and the Chicago River itself starting on fire from the massive amounts of pollution in the greasy river.

When the fire was extinguished two days later, the smoldering remains were too hot for a survey of the damage to be completed for a couple of days. Eventually, it was determined that the fire destroyed a patch four miles long and averaging 3/4 mile wide, more than 2,000 acres. This area included more than 73 miles of roads, 120 miles of sidewalk, 2,000 lampposts, 17,000 buildings, and $200 million in property, about a third of the city's valuation. After the fire 125 bodies were recovered, final estimates of fatalities were in the 200-300 person range, low for such a large fire, for many had been able to escape ahead of the flames. 100,000 out of 300,000 inhabitants were left homeless.

Land speculators, such as Gurdon Saltonstall Hubbard, quickly set about rebuilding the city; and only twenty years later, Chicago hosted the World Columbian Exposition.

Source: PBS

Also on the Oct. 8th, 1871, 400 miles to the north, the town of Peshtigo, Wisconsin burned to the ground in addition to an approximately 1.5M acres. Again on the fateful day of Oct. 8th, 1871, across Lake Michigan, the town of Holland, Michigan burned to the ground.

There have been persistent theories that these fires were all started by a comet. The latest comet theory was propunded by physicist Robert Wood who attributes the blazes to a fragment from Biela's Comet.

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