At the same period[2047] flourished Protogenes, as already stated. He was a native of Caunus,[2048] a place held in subjection by the Rhodians. Great poverty in his early days, and extreme application to his art, were the causes of his comparative unproductiveness. It is not known with certainty from whom he received his instruction in the art: indeed some say that he was only a ship-decorator down to his fiftieth year; a proof of which, it is asserted, is the fact, that in decorating the Propylæum[2049] of the Temple of Minerva, situate in one of the most celebrated spots in Athens, where he has painted the fine picture[2050] of Paralus and Hammonias, known by some as the Nausicaa, he has added in the side pieces of the picture, by painters called “parerga,” several small ships of war;[2051] wishing thereby to show in what department that skill had first manifested itself which had thus reached the citadel of Athens, the scene of his glory. Of all his compositions, however, the palm has been awarded to his Ialysus,[2052] now at Rome, consecrated in the Temple of Peace there. So long as he was at work upon it, he lived, it is said, upon nothing but soaked lupines; by which means he at once appeased both hunger and thirst, and avoided all risk of blunting his perception by too delicate a diet. In order to protect this picture against the effects of ill-usage and old age, he painted it over four times,[2053] so that when an upper coat might fail, there would be an under one to succeed it. There is in this picture the figure of a dog, which was completed in a very remarkable manner, inasmuch as accident had an equal share with design in the execution of it. The painter was of opinion that he had not given the proper expression to the foam at the mouth of the animal, panting for breath, as it was represented; while, with all other parts of the picture, a thing extremely difficult with him, he was perfectly satisfied. The thing that displeased him was, the evident traces of art in the execution of it, touches which did not admit of any diminution, and yet had all the appearance of being too laboured, the effect produced being far removed from his conception of the reality: the foam, in fact, bore the marks of being painted, and not of being the natural secretion of the animal’s mouth. Vexed and tormented by this dilemma, it being his wish to depict truth itself, and not something that only bore a semblance of truth, he effaced it again and again, changed his pencil for another, and yet by no possibility could satisfy himself. At last, quite out of temper with an art, which, in spite of him, would still obtrude itself, he dashed his sponge against the vexatious spot; when behold! the sponge replaced the colours that it had just removed, exactly in accordance with his utmost wishes, and thus did chance represent Nature in a painting.