Five papers on astronomical subjects bound together under the direction of G.B. Airy and added to the collection by him, with a list of contents in Airy's hand, 94 folios. The papers are in the hands of Flamsteed, Nicholas Stephenson and several unidentified scribes.

1. 'Venus in Sole visa: seu Tractatus Astronomicus' by Jeremiah Horrocks, 1639, differing from the version that constitutes RGO 1/68C, but written in the same hand.

2. 'Solares tabulae ex demonstratis fundamentis deductae et fabricatae a Johanne Flamsteedio Anno 1667/8', in Flamsteed's hand, 1668.

3. 'Praxis huius operis mirabilis' ('The practice of these wonderful operations'), a Latin treatise on alchemy, undated.

4. Part of an undated treatise on ballistics, copied in Nicholas Stephenson's hand, c. 1677.

5. 'Hecker his large Ephemeris for the year 1674. Reduced to an English meridian ... With a preface about ... the practices of Astrologers To which is added the Computation of two lunar Eclipses ... by Thomas Feilden', also headed 'Concerning the Vanity of Astrology'. The paper is in Flamsteed's hand, and was written c. 1673.