a letter to his friend Patrick Colquhoun, Esq. of Lon-don, one of the great moral reformers of the day, who highly approved of it, and handed Mr. Eddy's com-munication to Lord Sidmouth, then Minister for the Home Department, who, as well as Mr. Colquhoun, gave his decided approbation to the plan, and wished it should be introduced into England; and this was done by the London Society for improving Prison Discipline, and one or two prisons were soon after built upon this plan, one near London, containing six or seven hundred cells. A prison was also built at Pittsburgh, in Pennsylvania, upon this construction, containing from five to six hundred cells. When theAuburn state prison was erected, Mr. Eddy urged them to have the buildings wholly divided into cells, seven by nine feet each, but most of the commission-ers were afraid to try the experiment fully, but did it only in part, and this change from the old plan was made from their confidence in the judgment of the adviser. In 1824, Messrs. Tibbits, Allen, and Hopkins, were appointed by the legislature of New-York, to exa-mine and report on certain questions relating to the state prisons; the result of their labours was a confir-mation of the system that Mr. Eddy had recommend-ed twenty-two years before. These commissioners, on entering on their inquiries, issued a circular, which was answered by several gentlemen, and amongst them, by Mr. Eddy. Notwithstanding the fact, that loose habits of doing business, and inattention to the proper methods of reformation, united to the expense of the experiment, the public had, in a good degree, become tired of the penitentiary system, and it was thought by many, that it would be abandoned altogether; yet Mr. Eddy adhered to his previous opinion, and returned the following answer.