Paris: Chez Crochard 1820. First Edition. 448 pages plus 5 plates. 8vo. IN: Annales de Chimie et de Physique, Vol. 15, pp. 59-76 & 170-218, 1820. Contemporary quarter calf over marbled boards with black spine labels. Early French binder (?) label on front pastedown. 5 engraved plates in rear (1 folding). Surface wear/damage to the leather finish (resulting in minor loss to gilding and top label) and minor fraying to the head/tail spine panel. Small spot of worming inside lower rear board at the gutter. Text generally bright and clean. Very Good. Boards. 
This volume contains Ampere's important work "sur les effects des courans électriques" which established the FOUNDATION for the new science of ELECTRODYNAMICS.
'In this first paper, Sept. 18, he explains the law determining the position of the magnetic needle in relation to the electric current, and he also makes known his intended experiments with spiral of helical wires, which he predicts will acquire and retain the properties of magnets so long as the electrical current flows through them He constructed his spirals and helices, and to the astonishment of all, he produced magnets formed only of spools of copper wire traversed by electric currents...' (Mottelay)
'The first of Ampere's papers on the relationship between electric current-flow and magnetism, which established the new science of electrodynamics' (Norman 43)
For several years thereafter, Ampere published many papers on the subject, as he and others explored this new science prompted by Oersted's work. Dibner, Heralds of science 62; Honeyman Sale 82; Mottelay, Bibliographical history of electricity and magnetism, p. 472; Norman 43.