In the historical group of his collectanea, which were arranged with the orderliness peculiar to himself, he brought together all the kings’ names which it was possible to obtain, and all texts provided with dates, as well as all writings on stone or papyrus which concerned the genealogical relations of the Pharaonic families. Thus, too, during his sojourn at Rome we see him chiefly occupied in collecting the building stones only for that chronological-historical edifice to be reared in more tranquil days, and which he expected to erect in common with Bunsen. This self-control was to be well rewarded, for on his first and most important expedition to Egypt there flowed in upon him an affluence of new material, especially regarding the earliest epoch of Pharaonic history, which supplemented and in many ways modified that previously obtained. We can now take a comprehensive view of all the acquisitions of that time, and if we compare them with the two folio volumes of his Book of Kings,[29] or rather with the first draught of the same as he completed it in 1842, we must be astonished at the wealth of material which he had collected by the close of his sojourn upon the Tiber. The work mentioned contains in its present form all the names of the Pharaohs which have been preserved on monuments or papyrus, and is an indispensable handbook to anyone occupied in the study of Egyptian history. Its accuracy is equal to its copiousness, in which it had of course gained immensely, compared to the first sketch, which he willingly and frequently showed us. The production of a new book of this kind could only mean the giving of a new title to Lepsius’ Book of Kings, for the arrangement of this great work is so fine and faultless that a change could but injure it. If we regard the first draft of the Book of Kings, which was completed before the Egyptian journey (it was never printed), as the foundation of Lepsius’ later chronological labors, we must acknowledge that at that time it would have been entirely impossible to add anything new to what was there collected. It is with such weapons as these that victories are won, but he who had forged them imposed upon himself one preparatory labor after another before he entered upon the combat, and used them for the great historical purposes which he had in view.