Contains a treatise on electricity, magnetism, and electromagnetism.

Selected from Biot's "Précis élémentaire de physique", 3rd ed., Paris, 1824.

Electricity --General phenomena of electrical attraction and repulsion; conductors, and non-conductors; two kinds of electricity -- Of the laws which govern the apparent attraction and repulsion of electrified bodies -- Of the laws according to which electricity is dissipated by the contact of the air, and along the supports which retain it imperfectly -- Of electricity in a state of equilibrium in insulated conducting bodies -- Of combined electricities, and their action at a distance -- Theory of the motions produced in bodies by electrical attraction and repulsion -- Of the construction of electrical machines -- Of electroscopes -- Of the condenser -- Of the electrophorus -- Of the Leyden jar -- Of the electric battery -- Of the electric pile and of the phenomena presented by crystals capable of being electrified by heat -- Mechanical and chemical effects produced by the repulsive force of accumulated electricity -- Of atmospherical electricity and lightning rods -- Of electric light -- Of the different methods of developing electricity -- Of the developement of electricity by simple contact -- Theory of the voltaic apparatus, on the supposition that its conducting power is perfect -- Chemical effects of the voltaic apparatus -- Examination of the changes which take place in the voltaic apparatus by its action upon itself-effects which hence result in its electrical state -- Of secondary piles -- On the unequal resistance which the two electricities, when very weak, meet with in traversing different bodies -- Magnetism -- General phenomena of magnetic attraction and repulsion -- General considerations respecting the developement of magnetism. Resemblance to the electric pile -- Determination and measure of the directive force exerted by the terrestrial globe upon magnetized needles -- Of the different methods of magnetizing -- General distribution of free magnetism in each point of a needle magnetized to saturation by the method of double touch -- Of the best form of compass needles -- Of the action magnets on other natural substances -- Of the laws of terrestrial magnetism in different latitudes -- Aurora Borealis -- Periodical variations of the needle -- Practical instructions as to the method of observing the elements of terrestrial magnetism -- Electro-magnetism -- Of the magnetism imparted to metals by the voltaic current -- Analysis of the electro-magnetic forces -- Electro-magnetic multiplier -- Rotatory motion produced by the electro-magnetic forces -- Action of terrestrial magnetism upon the uniting wire -- Motion of fluids by the electro-magnetic forces -- Theoretical considerations -- Notes -- The torsion balance -- The best form of lightning rods, extracted from a paper of M. Gay-Lussac -- Hare's calorimotor and deflagrator -- Diurnal variation of the magnetic needle -- Influence of magnetism on the rates of chronometers -- Local attraction and Barlow's correcting plate -- Theory of magnetism by M. Poisson -- Influence of copper on the oscillations of the magnetic needle -- Effects of temperature on the magnetic forces -- Diurnal variation of the terrestrial magnetic intensity -- On the magnetism developed by rotation.