I insisted upon remaining to play for the promised dance, and argued that the fever would presently succeed the chill, and that I should then be warm enough. I passed the evening in great bodily discomfort, but managed to play quadrilles, waltzes, and the endless Virginia Reel. When at last I reached home and my bed, the fever did come with a will. I was fortunate enough to recover very quickly from this indisposition, and did not forget the warning which it gave me of the dangers of the Roman climate. The shivering evening left me a happier recollection. Among my sister's guests was Horace Binney Wallace, of Philadelphia, whom I had once met in his own city. He had angered me at that time by his ridicule of Boston society, of which he really knew little or nothing. He was now in a less aggressive frame of mind, and this second meeting with him was the beginning of a much-valued friendship. We visited together many points of historic interest in the city,--the Pantheon, the Tarpeian Rock, the bridge of Horatius Cocles. He had some fanciful theories about the traits of character usually found in conjunction with red hair. As he and I were both distinguished by this feature, I was much pleased to learn from him that "the highest effort of nature is to produce a _rosso_." He was a devoted student of the works of Auguste Comte, and had recently held some conversation with that remarkable man. In the course of this, he told me, he asked the great Positivist how he could account for the general religious instinct of the human race, so contrary to the doctrines of his philosophy. Comte replied, "Que voulez-vous, monsieur? Anormalité cérébrale." My new friend was good enough to interest himself in my literary pursuits. He advised me to study the most important of Comte's works, but by no means to become a convert to his doctrines. In due time I availed myself of his counsel, and read with great interest the volumes prescribed by him. Horace Wallace was an exhilarating companion. I have never forgotten the silvery _timbre_ of his rather high voice, nor the glee with which he would occasionally inform me that he had discovered a new and most remarkable _rosso_. This was sometimes a picture, but oftener a living individual. If he found himself disappointed in the latter case, he would account for it by saying that he had at first sight mistaken the color of the hair, which shaded too much upon the yellow. Despite his vivacity of temperament, he was subject to fits of severe depression. Some years after this time, finding himself in Paris, he happened to visit a friend whose mental powers had been impaired by severe illness. He himself had been haunted for some time by the fear of becoming insane, and the sad condition of his friend so impressed him with the fear of suffering a similar disaster that he made haste to avoid the dreaded fate by taking his own life.