An untitled book of planetary and solar observations and calculations, 93 folios, including a copy of observations for 1679-1680 (3r-23r), a few observations of Jupiter's satellites (92v), and indexes to the planetary work (1r, 91r and inside the front cover). The writing is mostly in Joseph Crosthwait's hand, but also features those of Flamsteed, Isaac Wolferman and possibly John Witty. There are dates from 5 December 1705 to 15 April 1713, although the observations may be earlier than this, and the calculations continue to circa 1717.