Every vital and productive germ with which the Germans inoculated the Roman world, was due to barbarism. Indeed, only barbarians are capable of rejuvenating a world laboring under the death throes of unnerved civilization. And the higher stage of barbarism, to which and in which the Germans worked their way up previous to the migrations, was best calculated to prepare them for this work. That explains everything. FOOTNOTES: [30] Author's note. The number assumed here is confirmed by a passage of Diodorus on the Celts of Gaul: "Many nations of unequal strength are living in Gaul. The strongest of them numbers about 200,000, the weakest 50,000." (Diodorus Siculus, V., 25.) That gives an average of 125,000. The individual nations of Gaul, being more highly developed, should be gauged more numerous than those of Germany. [31] Translator's note. 3861 square statute miles. [32] A German geographical mile contains 7,420.44 meters, or 7.42044 kilometers; hence a German geographical square mile contains 55.0629 square kilometers, equal to 21.2598 square statute miles. [33] Translator's note. The Ingaevonians comprised the Friesians, the Saxons, the Jutes and the Angles, living on the coast of the North Sea from the Zuider Zee to Denmark. [34] Author's note. According to Bishop Liutprand of Cremona, the main industry of Verdun in the tenth century, in the so-called Holy German Empire, was the manufacture of eunuchs, who were exported with great profit to Spain for the harems of the Moors. [35] Translator's note. The "Gau" is a larger territory than the "Mark." Caesar and Tacitus called it pagus. [36] Translator's note. The name given in ancient law to dependent farmers. CHAPTER IX. BARBARISM AND CIVILIZATION. Having observed the dissolution of the gentile order in the three concrete cases of the Greek, Roman, and German nations, we may now investigate in conclusion the general economic conditions that began by undermining the gentile organization of society during the upper stage of barbarism and ended by doing away with it entirely at the advent of civilization. Marx's "Capital" will be as necessary for the successful completion of this task as Morgan's "Ancient Society." A growth of the middle stage and a product of further development during the upper stage of savagery, the gens reached its prime, as near as we can judge from our sources of information, in the lower stage of barbarism. With this stage, then, we begin our investigation.