A Compendious System of Astronomy, in a Course of Familiar Lectures ; in which the Principles of that Science are Clearly Elucidated, So as to be Intelligible to Those who Have Not Studied the Mathematics. Also Trigonometrical and Celestial Problems, with A Key to the Ephemeris, and A Vocabulary of the Terms of Science Used in the Lectures ; which Latter are Explained Agreeably to Their Application in Them. By Margaret Bryan