The other case described by Professor Silliman was that of a man of mature age, and of a grave and respectable character. “For nearly two years previous to his taking the gas, his health had been very delicate, and his mind frequently gloomy and depressed. This was peculiarly the case for a few days immediately preceding that time; and his general state of health was such, that he was obliged almost entirely to discontinue his studies, and was about to have recourse to medical assistance. In this state of bodily and mental debility, he inspired about three quarts of nitrous oxide. The consequences were, an astonishing invigoration of his whole system, and the most exquisite perceptions of delight. These were manifested by an uncommon disposition for pleasantry and mirth, and by extraordinary muscular power. The effects of the gas were felt without diminution for at least thirty hours, and in a greater or less degree for more than a week. “But the most remarkable effect was that _upon the organs of taste_. Antecedently to taking the gas, he exhibited no peculiar choice in the articles of food, but immediately subsequent to that event, he _manifested a taste for such things only as were sweet_, and for several days _ate nothing but sweet cake_. Indeed this singular taste was carried to such excess, that he used _sugar and molasses, not only upon his bread and butter, and lighter food, but upon his meat and vegetables_. This he continues to do even at the present time; and although eight weeks have elapsed since he inspired the gas, he is still found _pouring molasses over beef, fish, poultry, potatoes, cabbage, or whatever animal or vegetable food is placed before him_. “His health and spirits since that time have been uniformly good, and he attributes the restoration of his strength and mental energy to the influence of the nitrous oxide. He is entirely regular in his mind, and now experiences no uncommon exhilaration, but is habitually cheerful, while before he was as habitually grave, and even to a degree gloomy.” * * * * *