Editing Carl Friedrich Gauss (section)

=== Gauss's brain ===
The day after Gauss's death his brain was removed, preserved, and studied by [[Rudolf Wagner]], who found its mass to be slightly above average, at {{convert|1492|g|lb|2}}.<ref>{{Cite book | last = Wagner | first = Rudolf | title = Über die typischen Verschiedenheiten der Windungen der Hemisphären und über die Lehre vom Hirngewicht, mit besondrer Rücksicht auf die Hirnbildung intelligenter Männer. Vorstudien zu einer wissenschaftlichen Morphologie und Physiologie des menschlichen Gehirns als Seelenorgan, Vol. 1 | publisher = Dieterich | year = 1860 | place = Göttingen | url = https://books.google.com/books?id=YqTH2HDXgqkC&q=%C3%9Cber+die+typischen+Verschiedenheiten+der+Windungen+der+Hemisph%C3%A4ren+und+%C3%BCber+die+Lehre+vom+Hirngewicht,+mit+besondrer+R%C3%BCcksicht+auf+die+Hirnbildung+intelligenter+M%C3%A4nner.+Vorstudie}}</ref><ref>{{Cite book | last = Wagner | first = Rudolf | title = Über den Hirnbau der Mikrocephalen mit vergleichender Rücksicht auf den Bau des Gehirns der normalen Menschen und der Quadrumanen. Vorstudien zu einer wissenschaftlichen Morphologie und Physiologie des menschlichen Gehirns als Seelenorgan, Vol. 2 | publisher = Dieterich | year = 1862 | place = Göttingen | url = https://books.google.com/books?id=czvfLAp94VsC&q=%C3%9Cber+den+Hirnbau+der+Mikrocephalen+mit+vergleichender+R%C3%BCcksicht+auf+den+Bau+des+Gehirns+der+normalen+Menschen+und+der+Quadrumanen.+Vorstudien+zu+einer+wissenschaftlichen+Morphologie+und+Physiologie+des+menschlichen+Gehirns+als+S}}</ref> Wagner's son [[Hermann Wagner (geographer)|Hermann]], a geographer, estimated the cerebral area to be {{convert|219588|mm2|abbr=out}} in his doctoral thesis.<ref>{{Cite book | last = Wagner | first = Hermann | author-link = Hermann Wagner (geographer) | title =  Maassbestimmungen der Oberfläche des grossen Gehirns | publisher = Georg H. Wigand | year = 1864 | place = Cassel & Göttingen | url = https://books.google.com/books?id=8ToAAAAAQAAJ&q=Maassbestimmungen+der+Oberfl%C3%A4che+des+grossen+Gehirns|language=de|trans-title=Measurements of the surface of the large brain}}</ref> In 2013, a neurobiologist at the [[Max Planck Institute for Biophysical Chemistry]] in Göttingen discovered that Gauss's brain had been mixed up soon after the first investigations, due to mislabelling, with that of the physician [[Conrad Heinrich Fuchs]], who died in Göttingen a few months after Gauss.<ref>{{cite journal | last1 = Schweizer | first1 = Renate | last2 = Wittmann | first2 = Axel | last3 = Frahm | first3 = Jens | author-link3 = Jens Frahm | title = A rare anatomical variation newly identifies the brains of C.F. Gauss and C.H. Fuchs in a collection at the University of Göttingen | journal = Brain | volume = 137 | issue = 4 | page = e269 | year = 2014 | doi = 10.1093/brain/awt296 | pmid = 24163274 | doi-access = free | hdl = 11858/00-001M-0000-0014-C6F0-6 | hdl-access = free }} (with further references)</ref> A further investigation showed no remarkable anomalies in the brains of either person. Thus, all investigations of Gauss's brain until 1998, except the first ones of Rudolf and Hermann Wagner, actually refer to the brain of Fuchs.<ref>{{cite web|website=Max Planck Society |url=https://www.mpg.de/7589532/Carl_Friedrich_Gauss_brain |title=Unravelling the true identity of the brain of Carl Friedrich Gauss}}</ref>