past none, he called to mind that they would be at work in the Faentine women's convent, and though 'twas excessively hot, he let nothing stand in his way, but at a pace that was more like a run than a walk, hied him thither; and so soon as he had made them ware of his presence, thus he spoke:--"Comrades, so you are but minded to hearken to me, 'tis in our power to become the richest men in Florence; for I am informed by one that may be trusted that there is a kind of stone in the Mugnone which renders whoso carries it invisible to every other soul in the world. Wherefore, methinks, we were wise to let none have the start of us, but go search for this stone without any delay. We shall find it without a doubt, for I know what 'tis like, and when we have found it, we have but to put it in the purse, and get us to the moneychangers, whose counters, as you know, are always laden with groats and florins, and help ourselves to as many as we have a mind to. No one will see us, and so, hey presto! we shall be rich folk in the twinkling of an eye, and have no more need to go besmearing the walls all day long like so many snails." Whereat Bruno and Buffalmacco began only to laugh, and exchanging glances, made as if they marvelled exceedingly, and expressed approval of Calandrino's project. Then Buffalmacco asked, what might be the name of the stone. Calandrino, like the numskull that he was, had already forgotten the name: so he made answer:--"Why need we concern ourselves with the name, since we know the stone's virtue? methinks, we were best to go look for it, and waste no more time." "Well, well," said Bruno, "but what are the size and shape of the stone?" "They are of all sizes and shapes," said Calandrino, "but they are all pretty nearly black; wherefore, methinks, we were best to collect all the black stones that we see until we hit upon it: and so, let us be off, and lose no more time." "Nay, but," said Bruno, "wait a bit." And turning to Buffalmacco:--"Methinks," quoth he, "that Calandrino says well: but I doubt this is not the time for such work, seeing that the sun is high, and his rays so flood the Mugnone as to dry all the stones; insomuch that stones will now shew as white that in the morning, before the sun had dried them, would shew as black: besides which, to-day being a working-day, there will be for one cause or another folk not a few about the Mugnone, who, seeing us, might guess what we were come for, and peradventure do the like themselves; whereby it might well be that they found the stone, and we might miss the trot by trying after the amble. Wherefore, so you agree, methinks we were best to go about it in the morning, when we shall be better able to distinguish the black stones from the white, and on a holiday, when there will be none to see us."