Jungh.

Franz Wilhelm Junghuhn
Photograph taken in 1860
Born	Friedrich Franz Wilhelm Junghuhn October 26, 1809 Mansfeld, Westphalia
Died	April 24, 1864 (1864-04-25) (aged 54) Lembang, West Java, Dutch East Indies
Nationality	German-born Dutch
Occupation	Botanist and geologist
Years active	1835-1864
Known for	Botanical and geological studies in Dutch Wast Indies
Notable work	See Bibliography

Friedrich Franz Wilhelm Junghuhn (October 26, 1809 in Mansfeld, Germany – April 24, 1864 in Lembang, Bandung, West Java), was a German-Dutch botanist and geologist. His father, Friedrich Junghuhn was a barber and a surgeon. His mother was Christine Marie Schiele. Junghuhn studied medicine in Halle and in Berlin from 1827 to 1831, meanwhile (1830) publishing a seminal paper on mushrooms in Limnaea. Ein Journal für Botanik.

As a student Junghuhn was given to bouts of depression and he attempted suicide. He became involved in a 'matter of honor', and in the ensuing duel was himself hit, but perhaps unknown to him his opponent died of his wounds. Junghuhn fled by taking service in the Prussian army as a surgeon but was discovered and sentenced to ten years in prison. He feigned insanity, and was able to escape in the Autumn of 1833. He was briefly a member of the French Foreign Legion in North Africa but was dismissed on account of his poor health. At Paris, he sought out the famed Dutch botanist Christian Hendrik Persoon, who recommended that Junghuhn "enlist in the Dutch colonial army, and have yourself sent to the Dutch East Indies as a medical doctor". Junghuhn did so, leaving Europe (Hellevoetsluis) in the early Summer of 1835, arriving in Jakarta (then called "Batavia") on October 13, 1835.

Junghuhn settled on Java, where he made an extensive study of the land and its people. He discovered the Kawah Putih crater lake south of Bandung in 1837. He published extensively on his many often highly adventurous expeditions and his scientific analyses. Among his works is an important description and natural history in many volumes of the volcanoes of Java, Bijdragen tot de geschiedenis der vulkanen in den Indischen Archipel (1843). He completed Die Topographischen und Naturwissenschaftlichen Reisen durch Java (Topographic and Scientific Journeys in Java) in 1845 and a first anthropological and topographical study of Sumatra, Die Bättalander auf Sumatra (Batak lands of Sumatra). in 1847. In 1849, ill health forced his return to the Netherlands, where he married Johanna Louisa Frederika Koch on January 23, 1850, and had a son. While in the Netherlands, Junghuhn began work on a four volume treatise published in Dutch and translated into German between 1850 and 1854: Java, deszelfs gedaante, bekleeding en inwendige struktuur (in German: Java, seine Gestalt, Pflanzendecke, und sein innerer Bau). Junghuhn was an avid humanist and socialist. In the Netherlands he published anonymously his free-thinking manifesto Licht- en Schaduwbeelden uit de Binnenlanden van Java (Images of Light and Shadow from Java's interior) between 1853 and 1855. The work was controversial, advocating socialism in the colonies and fiercely criticizing Christian and Islamic proselytization of the Javanese people. Junghuhn instead wrote of his preference for a form of Pandeism (pantheistic deism), contending that God was in everything, but could only be determined through reason. The work was banned in Austria and parts of Germany for its "denigrations and vilifications of Christianity", but was a strong seller in the Netherlands where it was first published pseudonymously. It was also popular in colonial Indonesia, despite opposition from the Dutch Christian Church there. The publisher of the first volume, Jacobus Hazenberg, refused to continue his association with the work; the remaining four were published by the outspoken liberal, Frans Günst, from volume three as installments (from October 1, 1855) of the newly founded journal for freethinkers, De Dageraad (Dawn).