In the month of September, 1827, the late Professor Rosellini, and the present highly talented director of the Belle Arti in the Uffizi at Florence, Professor Migliarini, were commanded by the Grand Duke of Tuscany to unroll a mummy which had been in the collection of the “Gabinetto di Fisica e Storia Naturale ” since the year 1824. This was done in the presence of a large number of spectators, and a very detailed account drawn up of it and drawings made on a large scale by Prof. Migliarini for His Royal Highness. As no notice of this interesting operation has been given to the world, the following details, taken from Prof. Migliarini's private notes, may not be unacceptable, in order that the peculiarities here exhibited may be compared with those observed in other mummies already unwrapped, or which may be hereafter brought to light.