So that, in wheat-grains, the very prevalent statement of the wergeld of the full freeman in the laws of various tribes as 200 gold solidi was in fact the same thing as a statement that the wergeld was a _heavy gold mina_, for 200 solidi of 96 wheat-grains contained exactly the same number of wheat-grains as did the heavy mina of ancient Eastern usage--viz. 19,200. In other words, so persistent seems to have been the traditional connection of the wergeld with the gold _mina_ that Roman monetary usage was overruled, and instead of reckoning in Roman drachmas, ounces, and pounds, the wergelds were reckoned once more, or perhaps we should say continued to be reckoned, in what was really the heavy gold _mina_ of 200 solidi. [Sidenote: And was often the equivalent of 100 oxen.] Further than this, in the laws of some of the tribes, as we shall find, the double solidus or stater still retained its position as the gold equivalent of the ox, so that the typical wergeld of 200 gold solidi in these cases was actually, like the _mina_, the gold equivalent of 100 oxen. Even where variations are found from this prevalent equation we shall still sometimes find the principle preserved, some other animal being substituted for the ox, and sometimes the long hundred of 120 being substituted for the decimal hundred. [Sidenote: The standard weight of the wheat-grain varied.] If this had been the whole truth the matter would be simple. But the fact is that, although the wergeld of 200 solidi of Constantine was the exact equivalent of the heavy gold mina reckoned in _wheat-grains_, there were differences in the standard weight of the wheat-grain. As already mentioned, the actual weights of Eastern and Greek staters were not exactly alike, and the Roman standard, in actual weight, was higher than the Eastern and Greek standards. The latest authorities, Hultsch and Lehmann,[8] on the evidence of inscribed weights, describe what may for convenience be called the Eastern gold mina--_i.e._ the _heavy_ gold mina of Assyrian and Babylonian metrology--as weighing 818 grammes, or 100 staters of 8·18 grammes. They tell us also that there was a _commercial_ mina of 120 of the same staters. This commercial mina therefore weighed 982 grammes, and metrologists have inferred that the Roman pound was derived from this commercial mina being in fact exactly one third of its weight, or 327 grammes. Now, as the commercial mina contained 120 staters of 8·18 grammes, it is obvious that the Roman pound, being one third of it, ought to have been divided, had Eastern reckoning been followed, not, as Constantine divided it, into 36 staters of 9·08 grammes, but rather into 40 staters of 8·18 grammes.