It would thus seem that the principle which we shall seek to establish for the Greek silver standards held true of the Phoenician likewise,—that whilst the gold unit, the basis of all weight, remains unchanged or was but very slightly modified even at a late period (when the idea of the original ox-unit must have become dimmed by time), in order to effect a more complete harmonizing of a threefold system of gold, electrum and silver, the silver units shew every kind of variety, which can only be accounted for by supposing that owing to the different relations between gold and silver in various regions and at various periods in the same regions, it was found necessary from time to time to increase or diminish the weight of the silver unit. Thus if gold was to silver as 12:1 in the 3rd century B.C., we find a ready explanation for the standard of Gades and Emporiae. The gold unit of 130 grs. would be worth ten silver units of 156 grs. each (130 × 12 = 1560 ÷ 10 = 156). So too the 118 gr. standard of Carthage may be explained by supposing that gold was to silver as 11:1; for then 1 gold unit of 130 grs. = 12 silver of 118 grs. each (130 × 11 = 1430 ÷ 12 = 119 grs.), duodecimal division perhaps being preferred to the decimal owing to the relations between electrum and silver, the former perhaps being as in Lydia[349] counted at 10 times the value of the latter. If gold was to silver as 12:1, and electrum to silver as 8:1, electrum being thus nearly two-thirds gold, one gold piece of 75 grs. = 1 piece of electrum of 118 grains, and 8 pieces of silver of 116 grs. each (75 × 12 = 900; 116 × 8 = 928), and 1 piece of electrum of 118 was worth 8 pieces of silver of 116 grs. each. All this is, be it remembered, purely conjectural, as we know nothing of the actual relations existing between any pair of the metals. However, when we come to deal with the electrum of Cyzicus we shall be able to produce some data, which will at least show that our suggested explanation of the relations existing between gold, electrum and silver at Carthage is not purely chimerical.