Note: - "From the Transactions of the Cambridge Philosophical Society. Vol. X. Part II."
- ULL copies are from the library of Augustus De Morgan, with his annotations on copies at [DeM] L0 (B.P.41) and [DeM] L0 (B.P.42). Copy at [DeM] L⁰ (B.P.42) has his note on t.p., "Recd Dec.r[?] 24/60".
- ULL copy at [DeM] L0 (B.P.41) is no. 1 in bound vol. of 10 tracts, chiefly by De Morgan, 1859-1869.
- ULL copy at [DeM] L⁰ (B.P.42) is no. 4 in bound vol. of 10 tracts by De Morgan, 1847-1863.
- DOI: 10.1163/9789004460409_MOR2-b29497863