Alarmed beyond measure at the evident failure of his plans, Henry IV. summoned monetary conferences of his wisest and best, and they were not even suspended by his assassination. The complaint again was, that the permission to circulate foreign monies had led to the transport of all the good coinage, to the ruin of commerce and great general disorder. Assemblies were held all over France in the trading towns, and the result of the advice of their delegates was the proclamation of 5th December 1614 (issued early in 1615). By this proclamation silver monies were left untouched, the tariff of the gold _écu_ was increased from 65 to 75 sols., and the value of the mark of gold proportionally increased. The ratio was thereby altered from 12.01 to 13.90. It is hardly too much to say that this step and alteration in the ratio saved France from the catastrophe which befell England and Germany in 1622 and 1623. The arrangement established in 1615 endured unaltered until 1636, when a slight reduction in the ratio was made to 13.61 (on the 8th May). Two months later it was found that so serious an export of good coinage was ensuing that "our kingdom would be entirely stripped of good currency, to our great damage, etc." A proclamation was accordingly issued (28th June 1636) attempting to regulate the course of exchange. The effort was vain, and on the following 22nd September the ratio was suddenly and violently altered to 15.36.[10] [Sidenote: FRANCE: THE REFORM OF 1640] A glance at the ratio prevalent in other countries will show how masterful was this act of France, but it carried with it the seeds of its own punishment. Such is the nature of the bimetallic law that any overshooting of the ratio, on no matter which side,--in favour of silver or in favour of gold,--establishes a differentiation, and the differentiation at once gives to the one metal a fulcrum or lever point--a purchasing power--against the other, and the undervalued metal, whichever it is, at once tends to disappear. Four years after this autocratic measure of France, it was found that her currency was in so depreciated a state, through exchange, that the only pieces current were lacking one-third of their full weight. The recoinage established by her proclamation of 31st March 1640, which established the new _louis d'or_, was intended as a complete and permanent remedy, and it may reasonably claim the praise of having effected so much. The alteration of the ratio established in 1640-41 by this recoinage (from 15.36 to 14.49) was only made after most serious deliberation. Monetary conferences of experts were held at Paris; and it was found, after careful assays of all the monies of the surrounding nations, that the prevailing ratios (1640-1) were at one and the same time-- Germany 12 : 1 Milan 12 : 1 Flanders and Netherlands 12.5 : 1 England 13.33