Note: - "Extracted out of the 'London and Edinburgh philosophical magazine and journal of science'."
- ULL copies are from the library of Augustus De Morgan. Copy at [DeM] L0 (B.P.9) has his list of contents of vol. in which it is bound, 31 Aug. 1852. ULL copy at [DeM] L0 (B.P.39) has his list of contents of vol. in which it is bound pasted on front flyleaf, and is inscribed on t.p.: "Professor De Morgan from the author".
- ULL copy at [DeM] L0 (B.P.9) is no. 14 of 18 items in vol. with binder's spine title: "Tracts".
- ULL copy at [DeM] L⁰ (B.P.39) is no. 9 of ca 40 items, 1803-1848, in vol. with binder's spine title: "Mathematical tracts".
- DOI: 10.1163/9789004460409_MOR2-b28006203