Letter, from Martin Fogel to Henry Oldenburg, dated at Hamburg Attaches the observations, and figures, of the solar sunspot by Henry Sivers witnessed at Hamburg in August 1671; discusses Hevelius's account of the transit of the moon by Jupiter (see EL/H2/27); list of general enquiries; corrections to be made to his published letter in 'Philosophical Transactions' Second figure of Sivers's observations was printed in 'Philosophical Transactions', vol 6, no 78, p 3033 Read to the Royal Society on 9 November 1671 1 November 1671