Editing Gottfried Wilhelm Leibniz (section)

===Other natural science===
By proposing that the Earth has a molten core, he anticipated modern geology. In [[embryology]], he was a preformationist, but also proposed that organisms are the outcome of a combination of an infinite number of possible microstructures and of their powers. In the [[life sciences]] and [[paleontology]], he revealed an amazing transformist intuition, fueled by his study of comparative anatomy and fossils. One of his principal works on this subject, ''[[Protogaea]]'', unpublished in his lifetime, has recently been published in English for the first time. He worked out a primal [[organismic theory]].<ref>On Leibniz and biology, see Loemker (1969a: VIII).</ref> In medicine, he exhorted the physicians of his time—with some results—to ground their theories in detailed comparative observations and verified experiments, and to distinguish firmly scientific and metaphysical points of view.