Geometrical and optical diagrams and diagrams of experiments and experimental equipment, inyerspersed by occasional leaves of text Text as follows: p. 380: measurements of specific gravity\r\nP. 385: `The Second Volume of the Medicina Hydrostatica shall God permitting consist of these four Parts'. Copy of MS 186, fol. 85v.\r\nP. 402: cover sheet\r\nP. 463: notes on diagram\r\nHand: Unknown, p. 380: Slare, p. 385: Bacon 1670s - 1680s