[Revised entry by Gary Ostertag on August 7, 2020. Changes to: Main text, Bibliography] Emily Elizabeth Constance Jones (1848 - 1922), a contemporary of Bertrand Russell and G. E. Moore at Cambridge University, worked primarily in philosophical logic and ethics. Her most significant contribution to the former area is her application of the intension-extension distinction to singular terms, anticipating Frege's related distinction between sense and reference and Russell's pre-"On Denoting" distinction between meaning and denotation. Widely regarded as an authority on...