APPENDIX.

The first of those tremendous concussions that shook a great part of the western hemisphere, during the years 1811-12, was first perceived at Louisville on the 16th December, 1811, 2 h. 15 m. A. M. commencing with about half the strength to which it gradually increased in about one minute; held at tremendous about one minute, then gradually subsided; whole duration, from 31-2 to 4 minutes; other slight motions follow.-2 h. 35 m. A. M.-Moderate motion 15 seconds.

7 h. 20 m. A. M.-Sudden; violent about 1 minute, then moderated by les sening throes, through the 2d and 3d minutes to slight tremor; this followed by small and placid motion of about 10 minutes; then severe, stood at that 10 se conds; gradually subsided, but not to perfect rest; six considerable shocks are felt during the succeeding 30 minutes; then became constant, and strengthened at a dreadful rate to tremendous, so as to threaten the town with total destruction; duration of greatest violence 1 1-2 min. ; moderated in reverse order of approach, but attended with a jarring or strong brisk tremor; it is doubtful if the earth is at rest from these troubles 10 minutes during the day and succeeding night.

Action generally vibratory, horizontal, gentle by, N. West and S. East; time about 80 returns to same point per minute, and uniform, no matter how much the stretch of motion varies. It seemed 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 oscilate largely, irregularly, and in differrent directions.-The greatest stretch of motion, whilst regular, was from 4 to 5 inches.

A great noise was produced by the agitation of all the loose matter in town, but no other strange sound was heard ; the general consternation is great, and the damage done considerable; gable ends, parapets, and chimnies of many houses are thrown down.

Weather, calm, cloudy, some mist; temperature, little above freezing. Dec. 17, 1811, 5 h. A. M.-Shock of considerable force; character of the floating motion before described, duration of greatest strength about one min.; moderate rain.

II h

11h. 40 m. A. M.-Sudden, and for an instant violent; duration 3 minutes weather cloudy, dark, some little rain in the course of the day; also frequent tremors, at irregular periods; evening chilly; wind flawey; direction unfixed. 18th.-Morning, winter cold; some snow; frequent but slight shocks during the day; six considerable ones; wind westerly, light.

19th.-No uncommon motion of the earth perceptible to the generality of people, some are confident there were several slight shocks during the day and night; winter weather.

20th.-10 h. 53 m. A. M.-Calm, freezing, fair; motion had been scarcely perceptible about 5 minutes, when it arrived to a very considerable strength, and continued, but less violent, until 11 o'clock, and, at intervals, till noon and after.-Evening, 8 o'clock, clear atmosphere except a circle round the moon ; about 9 o'clock, frequent slight tremors ; warm, calm, overcast; begins to rain at 12 at night.

21st.-10 h. 48 m. A. M.-Slight motion continues from 7 to 8 minutes, and at other times during the day-wind from West, and considerable.

Sunday 22, Monday 23, Tuesday 24, Wednesday 25, Thursday 26, Friday 27, Saturday 28.-These days are very uniformly of same character; weather generally pleasant, freezing; wind westerly; frequent tremors, or rather a longer motion, each day and night, and mostly between the hours of 8 and 12, by day and by night.

Sunday 29th-Slight tremors frequent to-day; weather calm, almost fair; evening overcast, gloomy; some wind, no fixed direction.

30th.-11h. A. M.-Considerable motion, and, at other times during the day, tremors; calmn; dark; towards evening heavy mist; evening calm; atmosphere without the least elasticity, one might say dead and brittle; temperature about freezing point.

$1st-4h. 5 m. A. M.- -Sudden shock, violent; gradually subsiding by lessening throes, in 10 minutes.-4 h. 45 m. moderate shock ; rain.

JANUARY, 1812.

Wednesday, 1st, 21 m. A. M.-Considerable shock, quickly over; temperature above freezing; rain; morning cold, cloudy; light wind from S. West; thm ice.-9 h. A. M. slight shock; light snow, but not sufficient to hide the ground; evening, light breeze from West; temperature, scarcely freezing.9 h. P. M. slight shock, and shortly another; also several slight shocks or tremors during the day and night.

2nd-Morning, winter cold; light clouds roll rapiály from the West, though little wind is felt; weather approaching to fair.-30 m. P. M. tremor, slight, increases irregularly 5 minutes; then considerable shock about 15 seconds; subsides in the reverse order of approach, several shocks slightly felt during the day.

3d-Cloudy, cold; between 8 and 12 o'clock, A. M. frequent tremors, some of considerable strength, also frequently during night.

4th-Tremors like those of yesterday; fair weather toward the evening. Sunday 5, Monday 6, Tuesday 7, Wednesday 8-These days are of the character of the 4th; weather moderate, wind small from S. West.

9th.-Pleasant and cold; light wind from West. 3 h. A. M.-Severe shock of short duration; between 10 and 1 o'clock in the day frequent slight motions, until one is tired of counting them; 24 happen at irregular periods; doubtful if perfectly still one hour to-day.

10th. Cold severe; light wind, S. W; not perfectly fair at times; atmosphere remarkably pure and agreeable; slight motions felt frequently through the night and about the middle of the day; evening overcast, dense vapour floats high, small westerly wind. 7h. P. M.-Motion of considerable strength.

11th.-Extremely cold morning; ice 5 inches, made in a few days. 7h. A. M.-Slight and frequent motions; dense vapour, dispersed about 9 o'clock; wind west, light; from 7 to 9 o'clock, not five minutes perfect rest of the earth; towards evening cloudy and cold; slight shock about 9 at night, and one again before daylight.

12th. Last night snow 1 1-2 inches deep, very cold morning, approaching to fair; brisk north-wester, such as are prevalent during winters generally, but which has not been experienced here this season before; from 9 until 12 at noon frequent and slight motions perceptible; fair, sunshine, but not melting snow; towards evening overcast, wind light from west; at 10, P. M. heavy, cloudy, wind south, severe cold.

13.-Pleasant winter weather, fair, small wind S. W. 11 h. A. M.-Vibrations begin and continue slightly and almost continually until 12 at noon, then a considerable shock for an instant, but a tremulous motion continues 30 minutes. 3h. P. M.-Sudden slight shock, perceptible for about 2 minutes; evening almost fair; ground generally clear of snow; many people feel a considerable tremor of the earth in the night,

14th.-Morning freezing; 11 h. A. M. a shock generally felt; noon, soft and pleasant breeze from S. W.; clear; sun displays a silvery splendor, and sheds a light of gloomy dusky white; towards evening cloudy; at 9 h. P. M. heavy clouds; light wind, W. S. W.; growing cold.

15th. Many corroborate the fact of there having been several tremors last night; morning, fine weather, small wind, S. W. soon hazy, snow one inch; long continuance of vibration and almost without intermission from 11 to 1 o'clock to-day; others perceptible by the pendulums; evening clear; light unsettled wind.

16th.-Fine winter weather, clear until afternoon; wind S. W.; evening dark, clouded; least appearance of tremor or other motions to-day; some slight motions perceived by the pendulums.

17th.-Snow all day, to the depth only of 2 inches, temperature moderate, wind small and unsettled; doubtful if any motion to-day. until 9 o'clock in the evening, one is sensibly felt.

18th.-Morning, sleet; considerable motion at 11 h. A. M. tremor-like; rain all day, freezing on the ground; nearly calm; what wind there is fixed at no point; evening calm; if any wind, from north; clouds seem to rest upon the ground, and reflect the numerous lights from windows and other parts in strongby defined columns which stream through each other in every direction, and produce a handsome but odd sort of scenery, whilst, in about each minute of time, from the beginning of night till after 9 o'clock, flashes of lightening illumine the whole; yet such is the density of the fog that one can discern no object through the glare of light unless it be immediately about himself, and it is not perceptible from what quarter the lightening proceeds- the distance must be great; with great attention, a long time in open ground, no report or thunder could be heard; there is no doubt that the cause was very distant.

19th-Weather spring-like, fair; ground cased with ice; soft but blustering wind from S. W. until after noon, then nearly calm; evening cold, least degree of motion to day, but evidently some.

20th--Severe cold, some snow; wind N. W. then north, then N. East, but to day in general, South East, hazy, as little motion to. day as yesterday; some say felt one last night.

21st-Extremely cold, hazy, wind varying and small, many say motions were sensibly felt, (a sort of tremor) to day and last night.

22nd-The Ohio has been closed over so that people crossed upon the ice yesterday, just above the falls, where the breadth is more than half a mile; to day the ice breaks and crouds down the declivity with a tremendous crash ; the scene is interesting; many who have boats and cargoes upon the river must suffer. This breaking up, it is presumed, is caused by a spring of some of the southern arms, and by the rain of Saturday, which glided swiftly into the river, over the case of ice which prevented the earth imbibing a drop; wind various and severely cold. During the last 24 hours, several considerable shakes of the earth, attended by a jarring of a peculiar character. Altho' severely cold, in general for several days past, a chilling dampness pervades the atmosphere, frequent fogs sweep along the surface and glaze every object exposed, with transparent ice, which is now about a quarter of an inch thick.

23rd-Morning hazy, wind, if any, from South, ground cased with ice 8 h. 50m. A. M. Earthquake awfully violent, equal to that of the 16th Dec. at 7 o'clock, and much of same character, duration five minutes, about the middle of that time tremendous, then did not entirely cease, but continued a kind of tremor ten minutes then strengthened to considerable violence for about one minute, in all, a constant motion was perceivable at least one hour; the damage done to houses is much in addition to that sustained on the 16th ult. 1-h. P.M. and at 10 h. 30 m. at night very considerable shocks and other tremulous motions frequently perceptible during the night. Immediately after the seBond shock this morning, it began to rain transparent ice in drops of the size of