Lepsius’ last work, on the linear measures of the ancients, included all the results of his metrological studies. In it he took a high standpoint from which it was possible to survey all the multitude of details as one great whole. He considered the linear measures of the Egyptians, Hebrews, Greeks, Romans, Assyrians and Persians, and the Philetarian system. This latter he found to be employed in Egypt, especially in the temple of Denderah. But he was not contented with treating them monographically, but also investigated the relations of all these systems to each other, and showed that in all probability a historical connection existed between them. The treatises on language written by Lepsius were all published in the transactions and monthly reports of the Berlin Academy of Sciences, and the greater number of them have been already cited. Up to the year 1866 he remained in Berlin, occupied with ceaseless labors, and only in the autumn holidays did he undertake long journeys for recreation or in pursuit of his scientific aims. Several times he went to London, especially on account of affairs relating to his standard alphabet. He was always attracted towards Paris, and once went there (1857) on a commission from the government to bid at an auction of Egyptian antiquities for the Berlin museum. He also reaped a fresh scientific harvest in the year 1852, during a second and longer visit to the museum at Leyden, where he was most cordially received by the Leemans and the mother of the excellent Director.