Grundlagen der Chemie
48. The Periodic Law
From 1868 to 1870, Mendeleyev published his classic work in St. Petersburg on his principles of chemistry that enabled him to organize the elements into what became known as the periodic table. The arrangement left some gaps which he predicted were for elements that were yet to be discovered (gallium, scandium, and germanium) and predicted their properties. This copy is the first appearance of the work in translation (an English version appeared later in 1891).