Mann, Horace, 1844-1868

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Mann was born in Boston in 1844, the eldest son of the well-known educator, Horace Mann. He received much of his education informally from his father and also studied zoology and botany with Asa Gray and Louis Agassiz at the Lawrence Scientific School. Mann specialized in Hawaiian plants, and prepared his thesis on this subject. It was published in the Proceedings of the American Academy of Arts and Science (1866), and Mann received his degree in 1867. He died a year later of tuberculosis, leaving his magnum opus, Flora of the Hawaiian Islands, unfinished.

From the description of Manuscripts by Horace Mann, 1860?-1868 (bulk). (Harvard University). WorldCat record id: 43814168

Son of American educator, reformer, and U.S. Congressman, Horace Mann (1796-1859).

From the description of Hawthorne-Mann family correspondence, 1853-1865 and n.d. (bulk 1864-1865). (Duke University Library). WorldCat record id: 50145006

From the guide to the Horace Mann Hawthorne-Mann family correspondence, and undated (bulk, 1853-1865, 1864-1865), (David M. Rubenstein Rare Book & Manuscript Library, Duke University)

Horace Mann, Jr. (1844-1868) was a noted American botanist and the eldest son of the well-known educational reformer, Horace Mann (1796-1859). He was born in Boston on February 25, 1844, and beginning in the early years of his childhood, his father fostered an interest in nature study. As a young man, he studied botany and became friends with Henry David Thoreau. They frequently consulted each other about the identification of plants and animals, and traveled together to Minnesota in the spring of 1861.

In the fall of 1861, he enrolled in the Lawrence Scientific School at Harvard and took courses in zoology with Louis Agassiz and in botany with Asa Gray, both prominent American scientists. In 1864, he accompanied William T. Brigham to the Hawaiian Islands, where he studied Hawaiian plants for a year. On his return to Harvard, he specialized in Hawaiian plants and prepared "Enumeratio of Hawaiian Plants" for his thesis, later published as Enumeration of Hawaiian Plants . Mann received his degree in 1867 and accompanied Professor Agassiz to Brazil, where he developed pulmonary tuberculosis.

Mann served as the curator of botany to the Boston Natural History Society, and was curator of the Harvard herbarium and, beginning in 1866, assistant to Professor Gray. When Gray left for Europe in September 1868, he placed Mann in charge of the botanical garden and botany department, apparently intending for Mann to succeed him when the latter retired. However, Mann’s health rapidly declined and he died of tuberculosis on November 11, 1868, at the age of 24, on the same day that he was elected to the American Academy of Arts and Sciences. During his lifetime, he published several articles and reviews, but his book, Flora of the Hawaiian Islands, was left unfinished at his death. His botanical collection of 7,500 species later formed the basis of Cornell University’s herbarium.

From the guide to the Horace Mann, Jr., papers, Mann, Horace, Jr., 1864-1868, 1864, (William L. Clements Library, University of Michigan)

Archival Resources
Role Title Holding Repository
creatorOf Hawthorne, Una, 1844-1877. Una Hawthorne collection of papers, [1851]-1874. New York Public Library System, NYPL
creatorOf Mann, Horace. Papers, 1858 Oct. 16. Ohio History Connection, Ohio Historical Society
creatorOf Horace Mann, Jr., papers, Mann, Horace, Jr., 1864-1868, 1864 William L. Clements Library , University of Michigan
creatorOf Horace Mann Hawthorne-Mann family correspondence, and undated (bulk, 1853-1865, 1864-1865) David M. Rubenstein Rare Book & Manuscript Library
referencedIn Harvard University. Gray Herbarium. Administrative correspondence of the Gray Herbarium, 179?-1965 (inclusive), 1840-1955 (bulk) [microform]. Harvard University, Gray Herbarium
referencedIn William Wallace Denslow Botanical Manuscripts Collection MS 64., 1864-1868 Special Collections and University Archives, University of Massachusetts Amherst Libraries
referencedIn George Combe Mann, Horace Mann, Jr., and Benjamin Pickman Mann [photograph], [ca. 1853]. Massachusetts Historical Society
creatorOf Mann, Horace, 1844-1868. Horace Mann, Jr., papers, 1864-1868, bulk 1864. University of Michigan, William Clements Library
creatorOf Hosmer, Alfred W. (Alfred Winslow), 1851-1903. Alfred Winslow Hosmer papers relating primarily to botany, [1872]-1902 (bulk 1887-1902). Concord Free Public Library, Special Collection
creatorOf Mann, Horace. Letter from Horace Mann [manuscript], 1847. University of Virginia. Library
referencedIn William Henry Brewer papers, 1830-1927 Yale University. Department of Manuscripts and Archives
referencedIn George Combe Mann, Horace Mann, Jr., and Benjamin Pickman Mann [photograph], [ca. 1853]. Massachusetts Historical Society
creatorOf Mann, Horace, 1844-1868. Manuscripts by Horace Mann, 1860?-1868 (bulk). Harvard University, Botany Libraries
creatorOf Mann, Horace, 1844-1868. Hawthorne-Mann family correspondence, 1853-1865 and n.d. (bulk 1864-1865). Duke University Libraries, Duke University Library; Perkins Library
referencedIn Una Hawthorne collection of papers, 1851]-1874 The New York Public Library. Henry W. and Albert A. Berg Collection of English and American Literature.
creatorOf Papers of Nathaniel Hawthorne, 1813-1904. Clifton Waller Barrett Library
referencedIn Emerson, Ralph Waldo, 1803-1882. Ralph Waldo Emerson papers, 1835-1871. Concord Free Public Library, Special Collection
creatorOf Mann, Horace, 1796-1859. Horace Mann papers III, 1709-1905; bulk: 1829-1904. Massachusetts Historical Society
referencedIn George Combe Mann, Horace Mann, Jr., and Benjamin Pickman Mann [photograph], [ca. 1853]. Massachusetts Historical Society
referencedIn Mann, Horace, 1796-1859. Diary : Boston, 1844-1848. Harvard University, Houghton Library
creatorOf Hamilton, William, Sir, 1730-1803. Letters, memoranda, and drawings concerning Pompei and recent eruptions of Mt. Vesuvius and Etna, 1760-1799. Harvard University, Houghton Library
referencedIn Deane, Walter, 1848-1930. Papers of Walter Deane, 1881-1929 (bulk). Harvard University, Botany Libraries
creatorOf Mann, Horace, 1796-1859. Horace Mann collection, 1669-1926. Massachusetts Historical Society
creatorOf Mann, Horace, 1844-1868. Horace Mann, Jr., and family correspondence, 1861. Minnesota Historical Society Library
referencedIn Charles Sumner correspondence, 1829-1874. Houghton Library.
referencedIn Brewer, William Henry, 1828-1910. William Henry Brewer papers, 1830-1927 (inclusive). Yale University Library
referencedIn Denslow, William Wallace, 1826-1868. William Wallace Denslow botanical manuscripts collection, 1864-1868. University of Massachusetts Amherst, W.E.B. Du Bois Library
Role Title Holding Repository
Relation Name
associatedWith Alfred and Elizabeth Brand Collection of Rare Books and Manuscripts. corporateBody
associatedWith Antioch College. corporateBody
associatedWith Brewer, William Henry, 1828-1910. person
associatedWith Brigham, William Tufts, 1841-1926. person
associatedWith Deane, Walter, 1848-1930. person
correspondedWith Denslow, William Wallace, 1826-1868 person
associatedWith Emerson, Ralph Waldo, 1803-1882. person
associatedWith Hamilton, William, Sir, 1730-1803. person
associatedWith Harvard University. Gray Herbarium. corporateBody
associatedWith Hawthorne family. family
associatedWith Hawthorne, Nathaniel, 1804-1864. person
associatedWith Hawthorne, Sophia Peabody, 1809-1871. person
associatedWith Hawthorne, Una, 1844-1877. person
associatedWith Hosmer, Alfred W. (Alfred Winslow), 1851-1903. person
associatedWith Lathrop, Rose Hawthorne, 1851-1926. person
associatedWith Lincoln, Abraham, 1809-1865 person
associatedWith Mann family. family
associatedWith Mann, George Combe, 1845- person
associatedWith Mann, Horace, 1796-1859. person
associatedWith Mann, Mary Tyler Peabody, 1806-1887. person
associatedWith Peabody, Elizabeth Palmer, 1804-1894. person
associatedWith Remy, Jules, 1826-1893. person
correspondedWith Sumner, Charles, 1811-1874 person
associatedWith Thoreau, Henry David, 1817-1862. person
Place Name Admin Code Country
Pacific Islands (Trust Territory)
Minnesota
Minneapolis (Minn.)
Hawaii
California
Mojave Desert (Calif.)
Hawaii
California
Hawaii
Mojave Desert (Calif.)
Minnesota River (S.D. and Minn.)
Fort Mojave (Ariz.)
Fort Mojave (Ariz.)
Ohio
Concord (Mass.)
United States
Mississippi River
United States
Subject
Natural history
Botanical specimens--Collection and preservation
Botany
Paiute Indians
Volcanoes--Hawaii
Volcanoes
Zoological specimens--Collection and preservation
Botany--Hawaii
Railroads
Steamboats
Phytogeography
Minerals--Collection and preservation
Education, higher
Occupation
Function

Person

Birth 1844

Death 1868

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SNAC ID: 18232028