Philosophical Transactions, vol.71, pp.492-501. [London: W. Bulmer for W. Nicol, 1781]." /> HERSCHEL, William (1738-1822). "Account of a Comet." Extract from: <I>Philosophical Transactions</I>, vol.71, pp.492-501. [London: W. Bulmer for W. Nicol, 1781]. | Christie's