became the key scientific activity of the age'." Humboldt met the geographer George Forster at the University of Göttingen, whose geographical description and scientific writing influenced Humboldt. His Geognosia including the geography of rocks, animals, and plants is "an important model for modern geography". As the Prussian Ministry of Mines, Humboldt founded the Free Royal Mining School at Steben for miners, later regarded the prototype of such institutes. German Naturphilosophie, especially the work of Goethe and Herder, stimulated Humboldt's idea and research of a universal science. In his letter, he made observations while his "attention will never lose sight of the harmony of concurrent forces, the influence of the inanimate world on the animal and vegetable kingdom." His American travel stressed the geography of plants as his focus of science. Meanwhile, Humboldt used empirical method to study the indigenous people in the New World, regarded as a most important work in human geography. In Relation historique du Voyage, Humboldt called these research a new science Physique du monde, Theorie de la Terre, or Geographie physique. During 1825 to 1859, Humboldt devoted in Kosmos, which is about the knowledge of nature. There are growing works about the New World since then. In the Jeffersonian era, "American geography was born of the geography of America", meaning the knowledge discovery helped form the discipline. Practical knowledge and national pride are main components of the Teleological tradition. Institutions such as the Royal Geographical Society indicate geography as an independent discipline. Mary Somerville's Physical Geography was the "conceptual culmination of ... Baconian ideal of universal integration". According to Francis Bacon, "No natural phenomenon can be adequately studied by itself alone – but, to be understood, it must be considered as it stands connected with all nature." 19th century By the 18th century, geography had become recognized as a discrete discipline and became part of a typical university curriculum in Europe (especially Paris and Berlin), although not in the United Kingdom where geography was generally taught as a sub-discipline of other subjects. A holistic view of geography and nature can be seen in the work by the 19th-century polymath Alexander von Humboldt. One of the great works of this time was Humboldt's Kosmos: a sketch of a physical description of the Universe, the first volume of which was published in German in 1845. Such was the power of this work that Dr Mary Somerville, of Cambridge