page_title: Marcus Ward Lyon Jr.
hierarchical_section_title: Marcus Ward Lyon Jr.
caption_attribution_description: English: Photo of Marcus Ward Lyon, Jr. taken in 1917 at Washington Biologists’ Field Club on Plummers Island.
context_page_description: Marcus Ward Lyon Jr. was an American mammalogist, bacteriologist, and pathologist. He was born into a military family, and demonstrated an early interest in zoology by collecting local wildlife around his father's army posts. He graduated from Brown University in 1897, and continued his studies at George Washington University while working part-time at the United States National Museum. At the same time, he taught at Howard University Medical School and later George Washington University Medical School. He received his Ph.D. from George Washington University in 1913. In 1919, he and his wife, Martha, moved to South Bend, Indiana to join a newly opened clinic. Prior to moving, Lyon had published many papers on mammalogy, both during and after his tenure at the USNM. In these papers, he had formally described six species, three genera, and one family. Once in South Bend, he began to publish medical studies, too, but continued his work in mammalogy, with a particular focus on the local fauna of Indiana. He published more than 160 papers during his career.
context_section_description: Marcus Ward Lyon Jr. (February 5, 1875 – May 19, 1942) was an American mammalogist, bacteriologist, and pathologist.  He was born into a military family, and demonstrated an early interest in zoology by collecting local wildlife around his father's army posts.  He graduated from Brown University in 1897, and continued his studies at George Washington University while working part-time at the United States National Museum (USNM).  At the same time, he taught at Howard University Medical School and later George Washington University Medical School.  He received his Ph.D. from George Washington University in 1913.  In 1919, he and his wife, Martha, moved to South Bend, Indiana to join a newly opened clinic.  Prior to moving, Lyon had published many papers on mammalogy, both during and after his tenure at the USNM.  In these papers, he had formally described six species, three genera, and one family.  Once in South Bend, he began to publish medical studies, too, but continued his work in mammalogy, with a particular focus on the local fauna of Indiana.  He published more than 160 papers during his career.
  Lyon acquired the rank of major in the Medical Reserve Corps during World War I, and was appointed president of the American Society of Mammalogists from 1931 to 1932.  He was a member of Sigma Xi, the Society of American Bacteriologists, the Indiana Academy of Science, and the Biological Society of Washington.  Lyon became a conservationist later in life.
caption: Marcus Ward Lyon Jr. in 1917 at Washington Biologists’ Field Club on Plummers Island
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