 Similarly, there has been a new appreciation of the importance of Darwin’s work in physiological botany and entomology during his studies in Cambridge from 1827–31 under the guidance of his mentor John Stevens Henslow (1795–1861), who exposed him to the physiological botany of Swiss botanist Alphonse De Candolle (1806–93). Through Henslow he was also led to the writings of John Herschel, Alexander von Humboldt (1769–1859), and Charles Lyell. Deeper understanding is now possible concerning Darwin’s work in geology at Cambridge with Adam Sedgwick (1795–1873). All of this has considerably deepened the understanding of his scientific and intellectual preparation for the theoretical work that transpired during the voyage of the H.M.S. Beagle (Sloan 2003b [2009]). Some scholars now interpret Darwin’s initial reflections on transformism to have developed from lines of thought stimulated by Humboldt’s version of German philosophy of nature as much as from the traditional sources usually assumed in Lyell, Herschel and British natural theology (R.J.  Richards 2005, 2002: chp. 14). This scholarly work, while not rejecting the importance of traditional British sources, has revealed the multiplicity of origins of Darwin’s reflections that display the interaction of British traditions with Continental developments in life science and philosophy, including those of German origin (R.J.  Richards 2002; Sloan 2003a, 2007).