During his life in Berlin as a Master Workman, Lepsius also addressed himself to those metrological studies which he continued to pursue up to the time of his death. If we look over the Transactions of the Berlin Academy of Sciences we shall also find that he was faithful to research in the department of languages. This was entirely apart from his special and unceasing labors on the Nubian Grammar and in the examination of the fundamental laws of construction of the other African languages. During his sojourn in Egypt amongst the monuments of the Pharaonic period, his attention had been specially called to the measures of the ancient Egyptians. He had subjected many of the monuments to measurement, and also found certain stamps of linear measure, with accompanying figures, upon some of those of the Old Kingdom. These he studied according to the same method which had already approved itself to him throughout his previous labors. He collected all existing material from the monuments with a thoroughness and in an abundance thitherto unknown, and subjected all previous investigations and measurements to severe criticism. From the information thus gained he sagaciously and cautiously deduced positive inferences. In his investigations he also included the kindred measures of other ancient peoples. In his fine work on the ancient Egyptian ell and its subdivisions[76] he arrived at the conclusion that the small ell of 0.450 of a meter “was the true unit under-lying the whole system.” The great royal ell, which was in use at the same time, he considered a special ell, distinct from the common one and added to the measures at a very early date. The cause of the increase of the small ell used in private life appeared to him to have been “that the kings or priests paid the same compensation for the great ell, in building, as formerly for the small ell, as the overplus of labor was considered as compulsory service, and not paid for.” In addition to all the greater and lesser units of the Egyptian linear measure[77] he also directed his attention to other measures of the ancient Egyptians,[78] and after familiarizing himself with the results obtained in Assyriology, (which at that time was making rapid progress), he occupied himself with comprehensive researches into the linear measures of the ancient nations in general. He took special pains to subject the celebrated tablet of Senkereh,[79] in which he discerned one of the most important bases of Asiatic metrology, to a searching examination, and in doing so he received the assistance of the most eminent Assyriologists. He restored the whole tablet, and recognized it as a table of comparison, by the aid of which Babylonian-Assyrian measures could be reduced to ells, which were reckoned according to the sexagesimal system. He proved that the metrical systems of the Assyrians, Babylonians and Persians were entirely distinct from each other, although he could grant them one point in common, the building