by means of a servant of Carmignuola, had caused poison to be given him in his food, which, although it was not fatal, reduced him to extremity.  The truth being discovered, the Venetians laid aside their suspicion; and as the Florentines still solicited their assistance, a treaty was formed between the two powers, by which they agreed to carry on the war at the common expense of both:  the conquests in Lombardy to be assigned to the Venetians; those in Romagna and Tuscany to the Florentines; and Carmignuola was appointed Captain General of the League.  By this treaty the war was commenced in Lombardy, where it was admirably conducted; for in a few months many places were taken from the duke, together with the city of Brescia, the capture of which was in those days considered a most brilliant exploit.

The war had continued from 1422 to 1427, and the citizens of Florence were so wearied of the taxes that had been imposed during that time, that it was resolved to revise them, preparatory to their amelioration.  That they might be equalized according to the means of each citizen, it was proposed that whoever possessed property of the value of one hundred florins should pay half a florin of taxes.  Individual contribution would thus be determined by an invariable rule, and not left to the discretion of parties; and as it was found that the new method would press heavily upon the powerful classes, they used their utmost endeavors to prevent it from becoming law.  Giovanni de’ Medici alone declared himself in favor of it, and by his means it was passed.  In order to determine the amount each had to pay, it was necessary to consider his property in the aggregate, which the Florentines call accatastare, in which in this application of it would signify TO RATE or VALUE, and hence this tax received the name of catasto.  The new method of rating formed a powerful check to the tyranny of the great, who could no longer oppress the lower classes, or silence them with threats in the council as they had formerly done, and it therefore gave general satisfaction, though to the wealthy classes it was in the highest degree offensive.  But as it is found men are never satisfied, but that the possession of one advantage only makes them desire more, the people, not content with the equality of taxation which the new law produced, demanded that the same rule should be applied to past years; that in investigation should be made to determine how much, according to the Catasto, the rich had paid less than their share, and that they should now pay up to an equality with those who, in order to meet the demand unjustly made, had been compelled to sell their possessions.  This proposal alarmed the great more than the Catasto had done; and in self-defense they unceasingly decried it, declaring it in the highest degree unjust in being laid not only on immovable but movable property, which people possess to-day and lose to-morrow; that many persons have hidden wealth which the Catasto cannot