PHILADELPHIA COUNTY PRISON, MOYAMENSING.--A recent personal inspection of every nook and corner of this old prison (erected 1835) revealed the fact, that under the present Board of Inspectors, with generous modern ideas for alterations and improvements, it might truly be called an up-to-date city prison; scrupulously clean and in order everywhere, inside and out. Our highly esteemed Superintendent, Robert C. Motherwell, Jr., shows his especial adaptation to the work; for during the past year 45,688 persons passed in and out under his eye, about 3,800 per month; of these the received were white males, 17,788; white females, 1,889; black males, 2,508; black females 653. Total, 22,835; of these 532 were boys under sixteen years old. Total discharged, 22,853. This large number of juveniles, caused the remark of a keeper, that if he had to choose between the care of 12 boys or 500 men, he would prefer the latter. These boys are never placed in a felon’s cell, but in a portion especially assigned them, and are always apart from the other older prisoners. All the repairs or alterations are done by the convicts, and many are employed in the shops. There is now a first-class steam-heating arrangement, and electric plant with sufficient voltage for an electrocution-chair in place of the gallows, if the State so directed. In connection with this, is a Kenyun steam disinfectant apparatus (the latest and most approved device) for the renovation of clothing, mattresses, and bedding from vermin, microbes, and possible contagion; treating it by high pressure of steam then by vacuum. The officers of the Moyamensing prison are all well tried conscientious men, and have a very promiscuous lot of people to deal with. There is a very good library of 2,700 volumes, used by all the male departments, besides other reading matter is furnished. The cleanliness and hygienic atmosphere of all the corridors and cells could not pass unnoticed. Three religious services are held in this prison every Sunday, and excellent volunteer choirs contribute, which are greatly appreciated. [Illustration: PHILADELPHIA COUNTY PRISON, Moyamensing.] Rev. Joseph J. Camp, the highly-esteemed Prison Agent of the Inspectors for the past sixteen years, interviews many prisoners brought in, and often goes to court when the case comes up for trial. Mr. Frederick J. Pooley, our meritorious Prison Agent of the Pennsylvania Prison Society, is doing good work and assists the Rev. Jos. J. Camp. He has to do principally with those minor cases which are discharged with short detention and without trial, by order of the magistrates.