Notebook, including: (fols. 7-93) notes for lectures on Euclid, 1651-3 (fols. 97v-160v, 292-246 rev.) mathematical calculations, tables and notes, including problems exchanged with various correspondents (much of the material used in Wallis's Opera mathematica (3 vols., Oxford, 1693-9)) (fols. 165-75, 295-293 rev.) observations on comets, 1664…