George Christian Hoffmann was born on June 7, 1837, in London, England.
He was a geologist and chemist. He received his early education in England and Germany and continued at the Royal School of Mines (1853) and the Royal College of Chemistry in London where he was employed as a junior assistant. He moved to Australia and worked at the Phytochemical Laboratory at Melbourne Botanic Garden. In 1872, he joined the staff of the Geological Survey of Canada and was promoted to assistant director in 1883. He was elected a Fellow of the Institute of Chemistry of Great Britain and Ireland (1879), a Fellow of the Royal Society of Canada, an Honorary Member of the Pharmaceutical Association of the Province of Quebec (1885), and a member of the Mineral Society of Great Britain and Ireland (1888). He received an honorary degree of LL.D. from Queen's University, Kingston. He wrote numerous reports and papers on scientific subjects.
He died on March 6, 1917, in Ottawa, Ontario.

Caleb Strong Holiday was born on August 13, 1847, in Montreal, Quebec.

He studied at McGill University (B.A.) and became a teacher. He served as a principal of Lachute Academy (1870-1874, 1875-1884) and later Huntingdon Academy.

He died on January 18, 1916, in Quebec, Canada.

David Honeyman was born on May 29, 1817, in Fife, Scotland.

He was a Presbyterian minister, geologist, teacher, and curator. He studied Oriental languages and natural sciences at the University of St. Andrews and then theology in Glasgow and Edinburgh. He was licensed to preach in 1841 and in 1848, he accepted a position as a professor of Hebrew at the Free Church College in Halifax, N.S. In 1850, he left the Free Church and joined the Presbyterian Church of Nova Scotia. In 1858, he left the active ministry to become involved in geological studies, but he continued to preach and assist in church work until his death. In 1861, he accepted a commission to present an exhibit of Nova Scotia minerals at the London International Exhibition (1862). He also represented Nova Scotia at the Dublin International Exhibition (1865), at the Universal Exposition in Paris (1867), and at the Philadelphia Centennial International Exhibition (1876). In 1882, he represented Canada at the International Fisheries Exhibition in London. His geological collections won him medals at all these international exhibitions. In 1868, he helped establish the Provincial Museum in Halifax (now the Nova Scotia Museum) and became its curator (1868-1889). He was elected to the Société géologique de France, the Society of Arts and Letters, the Horticultural Society, and the Geologists’ Association of London. He also became a fellow of the Geological Society of London and an original member of the Geological Society of America.

In 1847, he married Mary Donaldson (1824–1903). He died on October 17, 1889, in Halifax, Nova Scotia.

Sir Joseph Dalton Hooker was born on June 30, 1817, in Halesworth, Suffolk, England, the second son of the distinguished botanist, Sir William Jackson Hooker (1785-1865).

He was a British botanist, explorer, and supporter of Darwin’s theories. At 15 he began to attend classes at the University of Glasgow, at first in classics and mathematics and later in medicine (M.D., 1839). Having a wide knowledge of botany based on work in his father's herbarium and on extensive plant-collecting in the British Isles, his degree enabled him to join the Naval Medical Service and to accompany a scientific expedition to the Antarctic (1839-1843). He became assistant director of the Royal Botanic Gardens at Kew (1855-1865). In 1865, he succeeded his father as director, serving in that capacity until his retirement in 1885. His last major botanical expedition to the Rocky Mountains and California (1877), led to the publication of several important papers concerning the relationship of American and Asian floras. His travels resulted in the discovery of species new to science, many of which were soon introduced to horticultural circles. He gained an international reputation as a pioneer plant geographer. He was elected a fellow of the Linnean Society in 1842 and of the Royal Society in 1847. He also served as president of the Royal Society (1873–1878) and was knighted in 1877.

In 1851, he married Frances Harriet Henslow (1825–1874) and in 1877, he married Hyacinth Symonds (1842–1921). He died on December 10, 1911, in Sunningdale, Berkshire, England.

Leonard Horner was born on January 17, 1785, in Edinburgh, Scotland.

He was a Scottish merchant, geologist, and educational reformer. In 1799, he entered the University of Edinburgh where he studied chemistry and mineralogy, but he left it to become a partner in his family's linen business in 1803. In 1808, he joined the newly formed Geological Society of London and was elected one of the secretaries in 1810. Devoted to the welfare of the Society throughout his life, he was elected president in 1846 and again in 1860. In 1821, he founded the Edinburgh School of Arts and was one of the founders of the Edinburgh Academy in 1823. In 1827, he was invited to London to become warden of London University (now University College London). In 1831, he moved to Bonn for two years and pursued the study of minerals and rocks, publishing numerous articles in geological journals. He briefly returned to Edinburgh to take charge of his ailing father's company (1828-1833). A radical educational reformer, he was involved in the establishment of a University College School. As a commissioner on the Royal Commission on the Employment of Children in Factories, Horner arguably did more to improve the working conditions of women and children in North England than any other person in the 19th century.

In 1807, he married Ann Susanna Lloyd (1786–1862). He died on March 5, 1864, in London, England.

Dr. Franklin Benjamin Hough was born on July 20, 1822, in Martinsburg, Lewis County, New York.

He was a physician, scientist, historian, statistician, and a "father of American forestry." He studied medicine at Western Reserve College (M.D., 1848) and practiced in Somerville, N.Y. from 1848 to 1852. He was a pioneer historian of counties in New York State and an advocate of forest conservation. In 1855 and 1865, he was Superintendent of the State Census for New York and was also involved in the 1875 census. He was one of seven Commissioners of Parks in New York in 1872 and in 1876, he became a Forestry Agent in the U.S. Department of Agriculture. Hough was extremely active in making known the depletion of American forests and in 1885, he drafted the law that led to the preservation of the Adirondack Forest. He published several reports on forest management. He is the author of "A History of St. Lawrence and Franklin Counties, New York" (1853) and "A History of Jefferson County in the State of New York" (1854).

In 1845, he married Sarah Maria Eggleston (1816–1848) and in 1849, he remarried Mariah Ellen Kilham (1829–1910). He died on June 11, 1885, in Lowville, Lewis, New York.

Rev. Oscar Allen Houghton was born on May 15, 1843, in Trenton, Oneida County, New York.

He was a clergyman. He was educated at Genesee College (M.A., 1872) and at Syracuse University, N.Y. (PhD., 1874). He was a minister in many churches, among them the Central New York Conference of the Methodist Episcopal Church and Wolcott Methodist Episcopal Church, Vermont (1869-1871).

In 1869, he married Susan H. Ayres (1843–1900) and in 1902, he married Ida Arabella Delamater Gilbert (1855–1916). He died on September 22, 1908, in Towanda, Bradford County, Pennsylvania.

Rev. Dr. Horace Carter Hovey was born on January 28, 1833, in Rob Roy, Fountain County, Indiana.

He was a clergyman, cave explorer, geologist, and author. He was a pastor of the Park Street Church, Bridgeport, Conn., and was a member of the Connecticut Society of the Sons of the Revolution. He is considered the father of American speleology. He published many books on cave exploring, e.g., "Celebrated American Caverns, Especially Mammoth, Wyandot, and Luray" (1882) and "Guide Book to the Mammoth Cave of Kentucky Historical, Scientific and Descriptive" (1885).

In 1857, he married Helen Lavinia Blatchley (1830-1915). He died on July 27, 1914, in Newbury, Essex County, Massachusetts.

Albert Walton Bannister was born in September 1851 in Oakland, Ontario.

He was an educator. He graduated from Victoria University, Ontario (B.A., 1878; M.A., 1886). He served as Principal of St. Francis College in Richmond, Quebec. In 1892, he moved to California, where he spent the rest of his life. He was a professor at the University of Southern California, Los Angeles.

In 1880, he married Jessie Victoria Young (1858–1936). He died on April 30, 1918, in La Verne, Los Angeles County, California.

Bessie Radford was born in England in 1861. She came with her family to Quebec in 1872. The 1881 Canada Census lists her occupation as a seamstress.