But as if to counterbalance the dawning of this great good, there came with it a great evil; for it was in December of this year that the first of a series of terrible and violent earthquakes was felt at Louisville; these carried consternation to the hearts of all her citizens; and during the four months of their almost constant recurrance there was little either of leisure or inclination for political progress. The first of the shocks was felt on the 16th of December at 2 h. 15 m. in the morning. Mr. Jared Brookes says of it: “It seems as if the surface of the earth was afloat and set in motion by a slight application of immense power, but when this regularity is broken by a sudden cross shove, all order is destroyed, and a boiling action is produced, during the continuance of which the degree of violence is greatest, and the scene most dreadful; houses and other objects oscillate largely, irregularly and in different directions. A great noise is produced by the agitation of all the loose matter in town, but no other sound is heard; the general consternation is great, and the damage done considerable; gable ends, parapets, and chimneys of many houses are thrown down.” The whole duration of this shock from the earliest tremor to the last oscillation was about four minutes. This shock was succeeded during the same day by two others of almost equal power. It is related that when it was felt, several gentlemen were amusing themselves with cards when some one rushed in crying, “Gentlemen, how can you be engaged in this way when the world is so near its end?” The card-table was immediately deserted for the street, where from the vibratory motion the very stars seemed toppling to a fall. “What a pity,” philosophized one of the party, “that so beautiful a world should be thus destroyed!” “Almost every one of them,” says a historian of the incident, “believed that mother Earth, as she heaved and struggled, was in her last agony.”
During the prevalence of the earthquakes, it was customary to suspend some object so as to act as a pendulum in all the rooms and by the degree of its motion to determine the probable amount of danger. If the pendulum began to vibrate freely, the house was instantly deserted. Those who inhabited the loftier and statelier mansions were, at least for the time being, free from the envy of their humble neighbors, with whom they would then have freely exchanged tenements. The possession of a princely edifice would then have been a source of regret rather than of pride or of congratulation. It is said, that unlike the great calamities of other times, this one had a good effect upon the public morals. The reason of this may probably be found in the fact that while this was a source of constant terror and alarm, it was yet not of a character to produce that despair which leads men to seek to drown all thoughts of a future in the reckless pursuit of pleasure or of forgetfulness.
Mr. Jared Brooks who preserved a faithful scientific account of these earthquakes refers to that of the 7th of February, 1812, as the most violent endured at any period during their continuance. It occurred at 3 h. 15 m. in the morning and, as this gentleman’s account says, “was preceded by frequent slight motions for several minutes; duration of great violence at least 4 minutes, then gradually moderated by exertions of lessening strength, but continued a constant motion more than two hours; then followed a succession of distinct tremors or jarrings at short intervals until 10 h. A. M., when, for a few seconds, a shock of some degree of severity, after which frequent jarrings and slight tremors during the day, once, at least in ten minutes. At 8 h. 10 m. P. M. a shock of second-rate violence, and during some minutes two others at equal periods, connected by continual tremor of considerable severity; the last shock was violent in the first degree, but of too short duration to do much injury. At 10 h. 10 m. P. M, after frequent considerable motions, the shock comes on violent in the second degree, strengthens to tremendous, holds at that about seven seconds, then trembles away, severe about five minutes; frequent tremors follow, and a shock of third-rate violence. The action then ceases for a time.” With one more extract from Mr. Brooks, we shall conclude this account of the celebrated earthquakes of 1811. This is a table showing the number and relative value of all the earthquakes experienced here. It is preceded by a lucid explanation of the degrees of violence referred to in the table, and shows at a glance the number and intensity of the shocks.
“First-Rate.—Most tremendous, so as to threaten the destruction of the town, and which would soon effect it, should the action continue with the same degree of violence; buildings oscillate largely and irregularly, and grind against each other; the walls split and begin to yield; chimneys, parapets and gable ends break in various directions and topple to the ground.
“Second-Rate.—Less violent, but very severe.
“Third-Rate.—Moderate, but alarming to people generally.
“Fourth-Rate.—Perceptible to the feeling of those who are still and not subject to other motion or sort of jarring, that may resemble this.
“Sixth-Rate.—Although often causing a strange sort of sensation, absence, and sometimes gidiness, the motion is not to be ascertained positively; but by the vibrators or other objects placed for that purpose.
TABLE.