Stones from the heart of the Earl of Balcarres

Drawing of pieces of bone extracted from the heart of the second Earl of Balcarres, Charles Lindsay (1650–1662), whose parents (the first Earl of Balcarres, Alexander Lindsay (1618-1659) and Lady Anna Mackenzie (1621–1707)) were close to Robert Moray. The stones were shown in August 1663 when Moray suggested a drawing and a cast of them should be made. Robert Hooke was asked to do both, and his drawing was shown to the Royal Society on 19 August 1663. This is likely the drawing by Hooke, which was then pasted into the Register Book. The stones were donated to the Society in 1666.