“It is the function of science to discover the existence of a general reign of order in nature and to find the causes governing this order. And this refers in equal measure to the relations of man - social and political - and to the entire universe as a whole.”

The first English-language collection of Mendeleev's most important writings on the periodic law. Thirteen papers and essays, divided into three groups, reflect the period corresponding to the initial establishment of the periodic law (three papers: 1869-71), a period of priority disputes and experimental confirmations (five papers: 1871-86), and a final period of general acceptance for the law and increasing international recognition for Mendeleev (five papers: 1887-1905). A single, easily accessible source for Mendeleev's principle papers, this volume offers a history of the development of the periodic law, written by the law's own founder.