Extension of Theorem of Fermat, dated 26 December, Annals of Philosophy New Series, 11 (Feb, 1826), 81-83.
On the solutions of the Function ${\psi}^{z}x$ and their limitations, Art 1-8, dated Bath, 11 February 1826, Annals of Philosophy New Series, 11 (March, 1826), 168--183; Art 9-17, ibid, 11 (April, 1826), 241--246.