The last and perhaps the most important portion of the “Chronology” is occupied with Manetho and the authorities which can be traced back to him, and also with the relation of these authorities to each other. A special chapter is also devoted to Eratosthenes and Apollodorus. This work embraces the whole foundation of Egyptian chronology, and indicates the methods according to which all chronological investigations, no matter in what direction, should be conducted. The detached historical-chronological researches on special subjects[70] which followed the “Chronology” are so many model specimens of the consistent application of this method. In the “Chronology” itself the fine and thorough humanistic training of its author is manifested in a specially happy manner. There are modern scholars who, as students, confine themselves to their special provinces, and, peasant-like, do not look beyond the space where they plow and sow and reap. These may learn from Lepsius how, without straying too far afield, it may yet be possible to establish a connection between that which they themselves have gained, and the acquisitions which have been made in other and kindred departments of science. They may observe how details can be treated in the most thorough and fundamental manner, without losing cognizance of the whole. Lepsius was an able philologist, linguist, archaeologist and historian, before he became an Egyptologist. From an acquaintance with the main principles of science, and from broad generalities, he descended gradually and without a break to a knowledge of the separate parts. Vulgar learning amasses the material of knowledge, and leaves all that has been thus acquired heaped together in confusion; genuine learning proceeds from the general to the special, connects the details with the whole, and always subjects the former to the latter. It was thus that the scientific activity of Lepsius was exercised, and if we inquire what it was that elevated him above even the most industrious and ingenious of his fellow workers, we find that he owed his lofty position to his truly scientific method of development, research and work. This makes his productions a true system of learning, in contrast with the knowledge amassed by so many others who have labored without regard to the general principles animating the whole. Thence, too, it results that his “Chronology” is available for every purpose, and is employed as a guide and source of instruction, not only by the Egyptologist, but also by every historian who wishes to devote himself to the study, either of the chronology of all nations, or of any special people. Although many of the details of this work may have become disputable and untenable in consequence of the latest advances of science, yet for all time to come it must remain the starting point whence all investigations in this domain are forced to proceed.