"The experiment in New Jersey has been continued four years, upon an average number of twelve convicts; some of whom have been eighteen months, and some two years, in the cells, without intermission; but in this case, though the men are in separate cells, still the cells are so arranged, that several men can converse as freely as if they were in the same room, and no attempt has been made to prevent it. This, therefore, is to be regarded no farther as an experiment on solitary confinement day and night, than as keeping the men from seeing or coming in contact with each other; but not from evil communication, and corrupt society. In the opinion of the keeper of that Prison, this mode of punishment has been useful in preventing recommitments, and not permanently injurious to health or reason. How far the difference in the results of this experiment from that at Auburn, and the other in Maine, is to be attributed to the difference in the construction of the cells, and the management and diet of the prisoners, it is difficult to determine. In Maine the cells are very gloomy, and communication is difficult, though not impossible. At Auburn the cells are not gloomy, and communication was prevented day and night by a sentinel. In New Jersey the cells are not gloomy, and social intercourse unrestrained. In Maine the diet was very low, i.e. a pound of bread and cold water only. At Auburn, and in New Jersey, it was coarse, but nutritious. In Maine the men might have endured solitary confinement, with a more nutritious diet, a much longer period. At Auburn they might not have been as much injured in health or reason, if they had been permitted to converse with each other. And in New Jersey they might have been more injured if this kind of communication had been restrained. As the experiments have been conducted, they appear to be decidedly against solitary confinement day and night in Maine and at Auburn, and in favor of it in New Jersey. As this mode of punishment, however, would probably never be adopted, except to prevent effectually all evil communication, the experiment in New Jersey cannot be adduced in favor of entire seclusion: for there was nothing of this character in it.