Papers of John Flamsteed

'Liber observationum', also marked on the back cover 'Liber Collec ... observationum Solarium 1667. Epistola de Parallaxi Martis', containing collected notes on others' solar and lunar data, with Flamsteed's own planetary data, 66 folios. Nearly all of the writing is in Flamsteed's hand. The contents are dated 1667-1692, but may be of a later date.

The volume includes 'Solares Observationes ... digestae per J. Flamsteedium' (2r-23v); notes of Flamsteed's planetary observations (25v-29r); collected observations concerning lunar parallax (31v-33r); a draft of 'Phainomena Coelestia Derbiae Anno 1674 ... observabilia: ab Ephemeridibus ... Heckeri deducta' (33v-36r); rough calculations (36v-41r); an unfinished draft of a letter to Richard Towneley, 'De parallaxi Martis', 1674 (41v-45r); tables of 'The Moons Southings' and high-water at London Bridge (46v-52r); and notes on stellar and solar data, geographical longitudes and the use of a pendulum, with trigonometrical and log tables (58v-66r).

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