Dr. Barnum held numerous positions in her life including: Teacher at Stamford, New Haven, Smith and Carleton (1895-1896) colleges. A computer both Yale (1883-1887)and the Naval Observatories (1901). Work for Dana's Mineralogy, Mutual Life Insurance Company, Fidelity Mutual Life Insurance, and the Tidal Division, U. S. Coast and Geodetic Survey. She was an editor for Webster's International Dictionary from 1886-1890, and 1897. She was an editor for the Biological Survey, U. S. Department of Agriculture, from 1908-1913. She edited and proofread scientific publication for Yale University from 1914-1926.
Dr. Barnum was a Fellow AAAS, a member of the American Mathematics Society. She was interested in functions having lines or surfaces of discontinuity, tides and currents, annuities, and Social legislation. She died in 1934.
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