Background
Townsend, Charles Henry Tyler was born on December 5, 1863 in Oberlin, Ohio, United States. Son of Nathan Haskin and Helen Jeannette (Tyler) Townsend.
Townsend, Charles Henry Tyler was born on December 5, 1863 in Oberlin, Ohio, United States. Son of Nathan Haskin and Helen Jeannette (Tyler) Townsend.
Columbian (now George Washington University School of Medicine, 1887-1891. Bachelor of Science, George Washington University, 1908, Doctor of Philosophy, 1914.
Assistant entomologist, United States Department of Agriculture, 1888-1891. Professor entomology, zoölogy, and physiology, New Mexico Agricultural College, and entomologist, Experiment Station, 1891-1893. Curator Museum, Institute Jamaica, 1893-1894.
Field agent division entomology, United States Department of Agriculture, 1894-1898.
Again with New Mexico Agricultural College Expt Station, 1898-1899. Professor biological, et cetera, Batangas Provincial School, Philippine Islands, 1904-1906.
Expert, Gipsy Moth Laboratory, Bureau Entomology, United States Department of Agriculture, 1907-1909. Government entomologist and director entom. stations, Peru, 1909-1914.
Entom. assistant, Bureau Entomology, United States Department of Agriculture, 1914-1919.
Honorary custodian muscoid diptera, United States National Museum, 1914-1925. Chief entomologist, State of São Paulo, Brazil, 1919-1922. Ant expert in Brazil for American Cyanamid Company, 1923.
Director Cotton Plagues Laboratory, Piura, Peru, 1923-1924.
Cotton plagues expert, Chamber Commerce and Agriculture, Iquitos, Peru, 1925. Chief Institute Parasitologia Agricola, Lima, Peru, 1926.
Chief entomologist Estacion Experimental Agricola South.N.A., Lima, 1927-1929. Head firm Charles Townsend & Filhos, São Paulo, since 1929.
Consultant entomologist Compania
Ford Industrial do Brasil, Rio Tapajós, Pará, since 1932. Author: Manual of Myiology (12 parts). Also about 1000 titles on muscoid flies, cotton plagues, medical entomology, biogeography, ecology and physics.
Pioneer work on American cotton weevils.
Discovered mode of transmission of disease, verruga, in Peruvian Andes. First analysed insect environments.
Demonstrated Cephenemyia as the swiftest organism. Established about 1000 valid muscoid genera.
Explained gravity; recorded exact atomic weights.
Determined exact velocity of light. Defined cosmic units of length, time and Massachusetts Explained moon’s origin and earth’s axial inclination.
Secretariat Pleistocene duration and man in America at two million years.
Home: Fazenda Casagrande Velha. Itaquaquecetuba, São Paulo, Brazil South America
Married Caroline West. Hess, September 10, 1889 (died 1901). Married second, Margaret C. Dyer, June 1, 1908. Children: Karl Hess, Leland (deceased), Helen Tyler (deceased).