By the dawn of the nineteenth century, "elements" had been defined as basic building blocks of nature resistant to decomposition by chemical means. In 1869, the

The Principles of Chemistry (Volume II), a classical book, has been considered important throughout the human history, and so that this work is never forgotten

This classic exposition explores the origins of chemistry, alchemy, early medical chemistry, nature of atmosphere, theory of valency, laws and structure of atom

Dmitrii Mendeleev (1834–1907) is a name we recognize, but perhaps only as the creator of the periodic table of elements. Generally, little else has been known