Gov. Sargent’s account of an earthquake. 357 
ing sound, and in two minutes a violent explosion—at 11/. 35’ a 
light shock, but the river was exceedingly perturbed—11/. 48’, 12h. 
30’, and P. M. 2h. 43’, severe shocks with a shower of rain—at 3/. 
17’ a light shock and strong wind, with very cloudy weather—at 3/. 
30’ severe shock and no rain—3h, 55’ light shock, thunder and light- 
ning and heavy rain—4/, 10’ light shock and little rain, high wind 
and cold—4f, 50’ a moderate shock, wind very high, rain with a red 
western sky—5A. 35’ a shock like the last—5A. 55’ wind moderating ; 
many stars visible and comet peculiarly brilliant—6h. 45’ two shocks, 
fine clear night, and very strong wind. 
Wednesday 18th, at 12h. 20', A. M. IA. 10’, and 2h, 25’ very se- 
vere shocks—2h. 30/ repeated, with high wind and extreme cold—at 
8A. a light shock—at 34. 5’ a very hard shock continuing some time 
—4h. 40' a very severe shock—4h. 43’ one less so, and river very 
much agitated—7h. 80’ a very severe shock—10/. 8’ a light shock— 
114. 10’asevere shock—4h, 30’ P. M.a light shock. At this time my 
observer explored the island of willows and Indian grass, about 1000: 
acres, which was rent in many directions into pits, clefts, and chasms. 
. of various forms, some of which appeared deep, and had ejected: wa- 
ter, and coal in pieces of ten or twelve pounds weight ; one pit meas- 
ured 60 feet in circumference, and was 15 deep. At 5h. 50’ was ex- 
perienced another severe shock—and at 8/. 43’ one more severe—. 
weather very cold and night fair—during the night there were four 
shocks, but less violent than either of the two preceding. 
Thursday 19th, 54. 20' a shock of greater severity and duration 
than any of the preceding—the sun rose brilliant witha clear sky, and 
before noon my observer cast off his boat from the island (No, 32.): 
and made a distance of about seventeen miles, to the second Chicka- 
* saw Bluffs, during the day. At 14. 30’ P. M. he experienced anoth- 
er shock—at 2h, 17’ another, neither violent—at 8%. 30a light shock 
