Wikipedia articles incorporating text from the 1911 Encyclop\u00e6dia Britannica

Francesco de Sanctis (28 March 1817 – 29 December 1883) was a leading Italian literary critic and scholar of Italian language and literature during the 19th century.

Christoph von Sigwart (28 March 1830 – 4 August 1904) was a German philosopher and logician. He was the son of philosopher Heinrich Christoph Wilhelm Sigwart (31 August 1789 – 16 November 1844).

Hermann Kurz (30 November 1813 – 10 October 1873) was a German poet and novelist.
He was born at Reutlingen. Having studied at the theological seminary at Maulbronn and at the University of Tübingen, he became assistant pastor at Ehningen. He then entered upon a literary career and lived in Stuttgart. In 1863 he was appointed university librarian at Tübingen, where he remained until his death.Kurz's collections of poems, Gedichte (1836) and Dichtungen (1839), were less successful than his historical novels, Schiller's Heimatjahre (1843) and Der Sonnenwirt (1854), and his excellent translations from English, Italian and Spanish. He also published a successful modern German version of Gottfried von Strassburg's Tristan and Iseult (1844). His collected works were published in ten volumes (Stuttgart, 1874).His daughter, Isolde Kurz, was also a poet.

Christian Gottlieb Ferdinand Ritter von Hochstetter (30 April 1829 – 18 July 1884) was a German-Austrian geologist.

Alphonse Francois Renard (27 September 1842 – 9 July 1903), Belgian geologist and petrographer, was born at Ronse, in East Flanders, on 27 September 1842. He was educated for the church of Rome, and from 1866 to 1869 he was superintendent at the college de la Paix, Namur.In 1870 he entered the Jesuit Training College at the old abbey of Maria Laach in the Eifel, and there, while engaged in studying philosophy and science, he became interested in the geology of the district, and especially in the volcanic rocks. Thenceforth he worked at chemistry and mineralogy, and qualified himself for those petrographical researches for which he was distinguished.In 1874 he became professor of chemistry and geology in the college of the Belgian Jesuits at Leuven, a few years later he was appointed one of the curators of the Royal Natural History Museum at Brussels, and in 1882 he relinquished his post at Louvain. In 1888 he was chosen professor of geology at the University of Ghent, and retained the post until the close of his life. Meanwhile, he had been ordained priest in 1877, and had intended to enter the Society of Jesus. He was known as the Abbé Renard; but, as remarked by Sir A. Geikie, as years passed, the longing for mental freedom grew ever stronger, until at last it overmastered all the traditions and associations of a lifetime, and he finally separated himself from the church of Rome.His first work, written in conjunction with Charles-Louis-Joseph-Xavier de la Vallée-Poussin (1827–1904), was the Mémoire sur les caractères minéralogiques et stratigraphiques des roches dues plutoniennes de la Belgique et de l'Ardenne française (1876). In later essays and papers he dealt with the structure and mineral composition of many igneous and sedimentary rocks, and with the phenomena of metamorphism in Belgium and other countries. In acknowledgment of his work, the Bigsby Medal was awarded to him in 1885 by the Geological Society of London. Still more important were his later researches connected with the Challenger Expedition. The various rock specimens and oceanic deposits were submitted to him for examination in association with Sir John Murray, and their detailed observations were embodied in the Report on the Scientific Results of the Voyage of H.M.S. Challenger Deep Sea Deposits (1891). The more striking additions to our knowledge included the detection and description of cosmic dust, which as fine rain slowly accumulates on the ocean floor; the development of zeolitic crystals on the sea-bottom at temperatures of 32 °F (0 °C) and under; and the distribution and mode of occurrence of manganese nodules and of phosphatic and glauconite deposits on the bed of the ocean. Renard died at Brussels on 9 July 1903.Rue Alphonse Renard, in western Ixelles, is named in his honor. In addition, the mineral renardite was named in his honor in 1928.

François Laurent (8 July 1810 – 11 February 1887) was a Belgian historian and jurisconsult.

William Cullen (; 15 April 1710 – 5 February 1790) was a Scottish physician, chemist and agriculturalist, and professor at the Edinburgh Medical School. Cullen was a central figure in the Scottish Enlightenment: He was David Hume's physician, and was friends with Joseph Black, Henry Home, Adam Ferguson, John Millar, and Adam Smith, among others.
He was President of the Royal College of Physicians and Surgeons of Glasgow (1746–47), President of the Royal College of Physicians of Edinburgh (1773–1775) and First Physician to the King in Scotland (1773–1790). He also assisted in obtaining a royal charter for the Philosophical Society of Edinburgh, resulting in the formation of the Royal Society of Edinburgh in 1783.Cullen was a beloved teacher, and many of his students became influential figures. He kept in contact with many of his students, including Benjamin Rush, a central figure in the founding of the United States of America; John Morgan, who founded the first medical school in the American colonies, the Medical School at the College of Philadelphia; William Withering, the discoverer of digitalis; Sir Gilbert Blane, medical reformer of the Royal Navy; and John Coakley Lettsom, the philanthropist and founder of the Medical Society of London.Cullen's student and later rival John Brown developed the medical system known as Brunonianism, which conflicted with Cullen's. The competition between the two systems had knock-on effects in how patients were treated worldwide, especially in Italy and Germany, during the end of the eighteenth and beginning of the nineteenth century.Cullen was also an author. He published a number of medical textbooks, mostly for the use of his students, though they were popular in Europe and the American colonies. His best known work was First Lines of the Practice of Physic, which was published in a series of editions between 1777 and 1784, and inventing the basis of modern refrigeration.

Laurent-Guillaume de Koninck (3 May 1809 – 16 July 1887) was a Belgian palaeontologist and chemist, born at Leuven.
He studied medicine in the university of his native town, and in 1831 he became assistant in the chemical schools. He pursued the study of chemistry in Paris, Berlin and Gießen, and was subsequently engaged in teaching the science at Ghent and Liège. In 1856 he was appointed professor of chemistry in the Liège University, and he retained this post until the close of his life.About the year 1835 he began to devote his leisure to the investigation of the Carboniferous fossils around Liège, and ultimately he became distinguished for his researches on the palaeontology of the Palaeozoic rocks, and especially for his descriptions of the molluscs, brachiopods, crustaceans and crinoids of the Carboniferous limestone of Belgium. In recognition of this work the Wollaston medal was awarded to him in 1875 by the Geological Society of London, and in 1876 he was appointed professor of palaeontology at Liège. In 1882, he was elected as a member to the American Philosophical Society.He was awarded the Clarke Medal by the Royal Society of New South Wales in 1886.Publications:

Eléments de chimie inorganique (1839)
Description des animaux fossiles qui se trouvent dans le terrain Carbonifère de Belgique (1842–1844, supp. 1851)
Recherches sur les animaux fossiles (1847, 1873)See Notice sur LG de Koninck, by E Dupont; Annuaire de l'Aced. roy. de Belgique (1891), with portrait and bibliography.

Max Joseph Pettenkofer, ennobled in 1883 as Max Joseph von Pettenkofer (3 December 1818 – 10 February 1901) was a Bavarian chemist and hygienist. He is known for his work in practical hygiene, as an apostle of good water, fresh air and proper sewage disposal. He was further known as an anti-contagionist, a school of thought, named later on, that did not believe in the then novel concept that bacteria were the main cause of disease. In particular he argued in favor of a variety of conditions collectively contributing to the incidence of disease including: personal state of health, the fermentation of environmental ground water, and also the germ in question. He was most well known for his establishment of hygiene as an experimental science and also was a strong proponent for the founding of hygiene institutes in Germany. His work served as an example which other institutes around the world emulated.

Gustav Jäger (June 23, 1832 – May 13, 1917) was a German naturalist and hygienist.