Charles of Mount Argus (11 December 1821 – 5 January 1893), was a Dutch Passionist priest who served in 19th-century Ireland. He gained a reputation for his compassion for the sick and those in need of guidance. His reputation for healings and miracles was so great at the time that a reference is made to him in the famous novel Ulysses by James Joyce. He has been canonized by the Catholic Church. His feast day is 5 January.
Julius August Christoph Zech (24 February 1821 Stuttgart, Germany − 13 July 1864 Berg) was a German astronomer and mathematician.
In 1849, Zech published a table of logarithms; as a result, Zech logarithms for finite fields are named after him.
In 1863, Zech attended the founding meeting of the Astronomische Gesellschaft (German Astronomical Society) and became its Vorstand (chairman). Friedrich Wilhelm Argelander assumed this role upon Zech's death..
Karl Ludwig Pfau (German: [ˈluːtviç ˈpfaʊ] ; August 25, 1821 – April 12, 1894) was a German poet, journalist, and revolutionary. He was born in Heilbronn and died, aged 72, in Stuttgart.
Nicolas Auguste Pomel (20 September 1821 – 2 August 1898) was a French geologist, paleontologist and botanist. He worked as a mines engineer in Algeria and became a specialist in north African vertebrate fossils. He was Senator of Algeria for Oran from 1876 to 1882.
Théodose Achille Louis Vicomte du Moncel or Théodore du Moncel (6 March 1821 – 16 February 1884) was a prominent French physicist and advocate of the use of electricity. He invented many electrical devices and wrote several books. He was also a proficient artist, making high-quality prints of scientific and cultural interest.He also worked as a popularizer of knowledge on electricity.
In 1879, he founded the journal La lumière électrique.
He is one of the founders of the Société Nationale des Sciences Naturelles et Mathématiques of Cherbourg and was a member of the French Academy of Sciences.He was conseiller général of the Manche département (1861–1870) (Canton of Cherbourg-Octeville-Sud-Ouest).
Félix Joseph Henri de Lacaze-Duthiers (15 May 1821 – 21 July 1901) was a French biologist, anatomist and zoologist born in Montpezat in the department of Lot-et-Garonne. He was a leading authority in the field of malacology.He studied medicine in Paris, and worked at Necker Hospital under Armand Trousseau (1801–1867). Later on, with Jules Haime (1824–1856), he travelled to the Balearic Islands to study marine life. In 1854 he returned to Paris as an assistant to Henri Milne-Edwards (1800–1885), and soon afterwards became a professor of zoology in Lille.
In 1865 he succeeded Achille Valenciennes (1794–1865) as chair of histoire naturelle des mollusques, des vers et des zoophytes at the National Museum of Natural History, France, and in 1868 became a professor at the University of Paris. In 1871 he was elected to French Academy of Sciences in the department of anatomy and zoology.
Lacaze-Duthiers is remembered for his study of the anatomy and developmental history of mussels, coral, snails, brachiopods and other invertebrate marine animals. In 1858 he discovered three mollusks in the Mediterranean that produced purple-blue dyes. One of the species, named murex trunculus, was the source of the distinctive purple-blue dye used by the ancient Phoenicians and Canaanites. He realised the dying process could be used to create a photographic image in purple-blue dye which he named the Mucographé process. Examples are preserved in the Sorbonne and the Royal Society in London.
He conducted pioneer exploration of marine life of coastal Algeria, that included scientific studies of coral. A result of this research was the publication of "Histoire naturelle du corail" (1864).He was the founder of two laboratories devoted to marine biology; the biological station at Roscoff in 1876, and the Arago laboratory at Banyuls-sur-Mer in 1882. A number of species bear his name, a few of them being: Strophomenia lacazei, Convoluta lacazi and Dileptus lacazei. In 1872 he founded the journal "Archives de zoologie expérimentale et générale" (Archives of Experimental and General Zoology).
Adolphe-Marie Gubler (5 April 1821 – 20 April 1879) was a French physician and pharmacologist born in Metz.
Originally a student of botany, he began his medical studies in 1841 at Paris, where he was a pupil of Armand Trousseau (1801–1867). In 1845 he became an interne des hôpitaux, earning his doctorate in 1849. Afterwards he worked as a physician at the Hôpital Beaujon, and in 1853 earned his agrégation with a thesis on cirrhosis of the liver. In 1868 he was appointed professor of therapy to the medical faculty in Paris, maintaining this position until his death in 1879.
Gubler made a number of contributions in the fields of medicine and pharmacology. He is credited with being the first physician to differentiate between hematogenous and hepatogenous icterus. His name is associated with "Millard–Gubler syndrome", a condition characterized by softening of brain tissue that is caused by blockage of blood vessels of the pons. The disease is named in conjunction with Auguste Louis Jules Millard (1830–1915), who initially described the disorder in 1855. The eponymous "Gubler's line" is a line of superficial origin of the trigeminal nerve on the pons, a lesion below which results in the aforementioned Millard–Gubler syndrome.
He was the author of many works on botany, clinical medicine, physiology and pharmacology, with several articles on the latter subject being published in the "Journal de thérapeutique". Among his better written efforts was an 1856 treatise on hemiplegia titled De l'hémiplégie alterne envisagée comme signe de lésion de la protubérance annulaire et comme preuve de la décussation des nerfs faciaux, and a major publication involving pharmacopoeia called Commentaires thérapeutiques du codex medicamentarius, a book that was awarded the "Chaussier Prize" (Prix Chaussier, named after anatomist François Chaussier) by the Académie des sciences.Gubler was a founding member of the Société de biologie, and in 1865 became a member of the Académie de médecine.
While still an interne, he was asked by Dr. Trousseau to serve as a traveling companion to a young man suffering from emotional distress. While in Milan, Gubler was seriously wounded by a gunshot from his companion, forcing him to spend a year recuperating in Milan.
Dominique Clos (25 May 1821, Sorèze – 19 August 1908) was a French physician and botanist.
He studied medicine and sciences in Toulouse and Paris, obtaining his medical degree in 1845 and his PhD in natural sciences in 1848. In 1853 he succeeded Alfred Moquin-Tandon as professor of botany at the University of Toulouse, maintaining this position until his retirement in 1889. At Toulouse, he made major contributions to its botanical garden and herbarium. From 1881 to 1908, he was a correspondent-member of the Académie des sciences.
He was the author of numerous works on descriptive botany, plant teratology, phytogeography and agricultural botany. As a taxonomist, he described many species from various plant families. Taxa with the specific epithet of closianus are named in his honor' an example being Astragalus closianus.
Henri-Alexis Brialmont (Venlo, 25 May 1821 – Brussels, 21 July 1903), nicknamed The Belgian Vauban after the French military architect, was a Belgian army officer, politician and writer of the 19th century, best known as a military architect and designer of fortifications. Brialmont qualified as an officer in the Belgian army engineers in 1843 and quickly rose up the ranks. He served as a staff officer, and later was given command of the district of the key port of Antwerp. He finished his careers as Inspector-General of the Army. Brialmont was also an active pamphleteer and political campaigner and lobbied through his career for reform and expansion of the Belgian military and was also involved in the foundation of the Congo Free State.
Today, Brialmont is best known for the fortifications which he designed in Belgium and Romania and would influence another in the Democratic Republic of the Congo. The fortifications he designed in Belgium at the end of the 1880s around the towns of Liège, Namur and Antwerp would play an important role during the early stages of the German invasion of Belgium during World War I.
Alfred Bruyas (15 August 1821 – 1 January 1877) was an art collector and a personal friend of many important artists of his time, among them Gustave Courbet and Alexandre Cabanel. He donated his collection to the Musée Fabre, in Montpellier.
Born Jacques Louis Bruyas, he was the son of a wealthy banker in Montpellier. His interest in art was clear even at school. In 1840 he studied at the studio of Charles Matet, however he soon recognized the limits of his own talents and shifted his focus to the promotion and collection of contemporary art.
From 1849 to 1854 he spent most of his time in Paris. There he collected work by Louis Hector Allemand, Camille Corot, Thomas Couture, Eugène Delacroix, Narcisse Diaz de Peña, Adrien Guignet, Adolphe Hervier, Prosper Marilhat, Edouard-Antoine Marsal, Jean-François Millet, Théodore Rousseau, Philippe-Joseph Tassaert, Marcel Verdier and Constant Troyon, but above all the work of Gustave Courbet.