She went up to Girton in 1875[1] where, prompted by having read Henry Fawcett's Political Economy (1863) and Mill's A System of Logic (1843), she chose the Moral Sciences Tripos.

Her undergraduate career was considerably interrupted because the education of her younger brothers took precedence over her own,[2] but despite this in 1880 she was awarded a first class in the Moral Sciences Tripos.

She spoke about James Ward's Naturalism and Agnosticism on 1 December 1899, with the philosopher Henry Sidgwick chairing the meeting.

She spent her career developing the idea that categorical propositions are composed of a predicate and a subject related via identity or non-identity.

[6] Constance Jones' most significant contribution to philosophy was in logic and she was widely regarded to be an authority in this area by her contemporaries.