HerschelRASMS. C.1/1.1, sheet pasted in the front.
3.
HoskinMichael, The Herschel partnership (Cambridge, 2003), 62–63.
4.
Caroline to John, 8 August 1826, British Library Egerton 3761.
5.
HausmannFriedrich Ulrich has been confused with the more famous FriedrichJohannHausmannLudwig (1782–1859), who however lived in Göttingen. FriedrichUlrich was a resident of Hanover in later life, but he may possibly have met Caroline when he was in England as a war refugee in the early years of the century. I thank Arndt Latusseck for this information.
6.
HerschelJohnMrs, Memoir and correspondence of Caroline Herschel (London, 1876), 305.
7.
BullardMargaret, “My small Newtonian sweeper—where is it now?”, Notes and records of the Royal Society of London, xlii (1988), 139–48; her discovery shows that HoskinMichael and WarnerBrian (“Caroline Herschel's comet sweepers”, Journal for the history of astronomy, xii (1981), 27–34) misidentified the instruments sketched in Figure 1 of the present article. Curiously, Mrs Bullard makes the bizarre claim that the sweeper was Herschellian in construction.
8.
HerschelJohn took the 5ft to the Cape of Good Hope, and in due course brought it home (packing lists for the voyages are now in the University of Texas at Austin, information courtesy of Brian Warner), but its present whereabouts are unknown.
