...Michelle D. Hoffman This paper considers educators’ debates over the proper place of the atomic theory in American and Ontario high schools during the first decade of the twentieth century, in the context of emerging, historic research on the nature of matter. In 1905, University of Toronto chemist...

...Alan J. Rocke In 1892, the young but already eminent physical chemist Pierre Duhem published a 64-page monograph on chemical theory. The essay comprised his first extended statement on atomic-molecular ideas in chemistry, and contained a frontal attack on the chemical atomic theory of his day...