Provides a thorough overview of historical and contemporary theories of evolution, discusses key concepts and terms, and argues that our understanding of evolution has changed the beliefs and values of modern humankind. Reprint. 30,000 first printing.

Throughout his scientific career, Lavoisier paid particular attention to the study of electricity. In the early 1760s, the French chemist was deeply influenced by Abbé Nollet's lectures as part of one of his private courses in experimental physics. Subsequently, Lavoisier always tried to apply to chemistry experiments the precision standards of physics instruments, including electrical ones. He often collaborated with Jacques-Mathurin Brisson, became friends with Benjamin Franklin, did electrical experiments with Alessandro Volta, was favorably impressed by the work of Charles-Augustin (...) Coulomb and the Academy of Sciences asked him for reports on the work on electricity of Jean-Paul Marat and other works concerning electrical phenomena. It is therefore surprising to note that, despite all this, Lavoisier published very little on electricity and that he tried to avoid discussing in detail both the coherence of electrical theories and their usefulness for research in chemistry. Faced with electricity, Lavoisier actually became hesitant and contradictory. For reasons that will be analyzed throughout my study, Lavoisier thought that electricity was a notion that could not provide much help in explaining pneumatic phenomena and, more generally, not very useful for research in chemistry. The study of electricity had been at the center of Lavoisier's attention throughout his scientific career. In the early 1760s, the French chemist was deeply influenced by the lectures delivered by the abbé Nollet in one of his private courses in experimental physics. Thereafter, Lavoisier constantly tried to apply the standards of precision of physical instruments, including electrical ones, to chemical experimentation. He frequently collaborated with Jacques-Mathurin Brisson; he became a friend of Benjamin Franklin; he did electrical experiments with Alessandro Volta; he was impressed by Charles-Augustin Coulomb's works; and he was asked by the Académie des sciences to report on Jean-Paul Marat's work on electricity, as well as on other works dealing with electrical phenomena. Against this background it is rather surprising that Lavoisier published very little on electricity, and he tried to avoid discussing in detail either the consistency of electrical theories or their utility for chemical research. When dealing with electricity, Lavoisier in fact became hesitant and contradictory. For reasons that I will discuss at some length, Lavoisier thought that electricity was a notion of little help for the explanation of pneumatic phenomena and, more generally, for chemical research. -/- . (shrink)

In 1826 André-Marie Ampère published the ‘Mathematical theory of electrodynamic phenomena, uniquely derived from experiment’, in which he showed how the mathematical law for the force between current elements could be derived from four ingenious equilibrium experiments. He made a great show of following a Newtonian inductivist methodology, and his law, like Newton's for gravitation, was presented as a purely descriptive mathematical expression for a certain class of phenomena, one for which its author did not provide any causal or ontological (...) justification. Ampère's electrodynamics would accordingly seem to have been a solid contribution to the Laplacian-Newtonian approach to physics so actively pursued in France during the first quarter of the nineteenth century. It does not surprise us to read that his electrodynamic force law and his molecular-currents theory of magnetism were immediately and widely accepted by his French contemporaries. Ampère was, in this view, just another of the many great French mathematical physicists of the period. (shrink)