'One other great work was left for him to do, a work all trace of which soon vanished, The Battle of the Standard, in which he had Michelangelo for his rival. The citizens of Florence, desiring to decorate the walls of the great council-chamber, had offered the work for competition, and any subject might be chosen from the Florentine wars of the fifteenth century. Michelangelo chose for his cartoon an incident of the war with Pisa, in which the Florentine soldiers, bathing in the Arno, are surprised by the sound of trumpets, and run to arms. His design has reached us only in an old engraving, which perhaps helps us less than what we remember of the background of his Holy Family in the Uffizii to imagine in what superhuman form, such as might have beguiled the heart of an earlier world, those figures may have risen from the water.' (71)