An Account of the earthquakes which occured in the United States, North America, on the 16th of December, 1811, the 23d of January, and the 7th of February, 1812; with the inferior shocks considered as appendages to the former. [electronic resource] : To which is annexed, miscellaneous articles of a similar nature; and a sketch of the theory of earthquakes in general, including information respecting some of the most remarkable eruptions and concussions of preceding periods