[On Magnetism] / Archibald Smith. [Ms. notebook (88p.), 1839-1847. Includes calculations of 'Motion of a slightly disturbed magnetic needle', re a 'Flying Machine', re 'Effect of Careening a ship on the compass', re 'Loss of Sphynx', 'Equations to be sent to Col. Sabine', 'Poisson's Theory', 'Kepler's Problem'.