Such testimony is the more impressive, when we remember that it comes from a gentleman who had not only exhibited convincing proofs of his fitness for the responsible duty to which he was called by his government, but who had at the same time shown his freedom from the constraints of mere imitation. As justly remarked by M. Moreau-Christophe, the plan of Mr. Haviland was not servilely copied; but while endeavoring to accommodate some of its details to peculiarities of religion, national character and climate, M. Blouet rendered his hearty tribute of acknowledgment, alike honorable to himself and to its object, for the reform which he had witnessed in the main elements of the design. The most striking mode of illustrating the facts, is to assemble plans of the chief prisons erected before the Eastern Penitentiary, and to compare them with the plans of separate prisons for convicts, since constructed. It will be apparent at the first glance, that there has been a sudden and radical change, and that the Eastern Penitentiary is the head of the new series. Even in many particulars, in which the old and the new forms may exhibit a resemblance, there will be found an essential difference in the principle of the design; the same feature being found to have a different object, or a different relative value. The influence of the reputation acquired by such success, was immediately felt in the enlargement of Mr. Haviland’s sphere of professional exertion. At the same time that he was occupied with the completion of the series of cell-blocks at Cherry Hill, he was also engaged upon several other similar works. The Western Penitentiary having been proved to be unsuited to its objects, he was invited, about the year 1834, to superintend its reconstruction in conformity with the plan of the Eastern. The authorities of the county of Alleghany requested his direction of the prison of that county, then about to be built; and he also drew the plan of its Court House. The State Penitentiary of New Jersey, was built by him after the model of Pennsylvania; and he also designed and superintended the erection of the prison of Essex county, in New Jersey, and the Halls of Justice, (the city prison,) of New York. The nearly simultaneous direction of these buildings at places very remote one from another, required an extraordinary energy and power of endurance. In 1841, the prison of Dauphin county was constructed by him at Harrisburg, the capital of the State; and it was at that time generally regarded as the best example in this country of a small county jail. It would be unfair to judge of the details of the preceding works, by a comparison of them with the latest and most costly specimens of this class of buildings. The English government at a great expense, and with a generous liberality of encouragement, of which there was no parallel in the United States, procured a series of experiments upon the ventilation of large