The superintendent of the Virginia Penitentiary, Samuel O. Parsons, says, I consider separating convicts at night, of all others, the most important feature in the Penitentiary system of punishment, and one, which should every where claim the first consideration in erecting such institutions.

With the opinions thus expressed, of the practical men placed at the head of these institutions, the opinions of the governors of the respective States, of the judges, and legislators, and benevolent men, so far as they have been expressed or known, perfectly coincide.

Governor Plumer, of New Hampshire, says, effectual measures should be adopted to separate, in the Penitentiaries, old offenders from the young and inexperienced.

Governor Lincoln, of Massachusetts, in a late message, recommended, that immediate provision be made for the erection, as soon as may be, in the prison yard, of a building, with sufficient cells for the separate confinement of the present, and any future probable number of convicts.

Governor Wolcott, of Connecticut, stated to the Legislature, in May, with reference to the improvements at Auburn, that there were few subjects upon which their deliberations could be bestowed with higher advantage to the best interests of the State.

Governor Clinton has formerly expressed his opinion of the importance of solitary confinement, and in his late message to the Legislature, he expresses an opinion concerning the institution in New York city, for the reformation of Juvenile Delinquents, which is constructed on the plan of the building at Auburn, that it is probably the best Prison in the world.

Judge Woodbury, of New Hampshire, says, that 'Prisoners, during the night, should be wholly separated from each other.'

Mr. Hopkinton, of New Hampshire, says, 'a novice, who, if kept from company worse than himself, might have been reclaimed from his first attempts, is here associated with old, hardened, and skilful offenders; he hears with envy and admiration the stories of their prowess and dexterity; his ambition is roused; his knowledge extended by these recitals; and every idea of repentance is scorned; every emotion of virtue extinguished.'

Judge Thacher, of Boston, says, 'by the confession of those who administer our Penitentiaries, it is found, that most of the evils of this system of punishment flow from the almost free and unrestrained intercourse, which subsists among the convicts.'

Thomas Eddy, of New York, says, 'if a number of ingenious men were requested to suggest the best possible mode of increasing the number of thieves, robbers, and vagabonds, it could scarcely be in their power, to fix on any plan, so likely to produce this effect, as confining in one collection, a number of persons already convicted of committing crimes of every description.'