PRISON AT ATHENS.--The following description of an Athenian prison is extracted from a letter of an American citizen, (Rev. Dr. Jonas King,) whose name is doubtless familiar to most of our readers as associated with a very extraordinary exercise of arbitrary power. _In the Prison of Athens, called Medrese, 9th March, 1852._ I am now in prison, and my name is inscribed among the vilest malefactors of Greece, in a book kept for the purpose, in which the names of all who enter are written, with the age, description of their person, and the crime of which they have been guilty. Mine is that of preaching the word of God. That of two others here in chains, is the murder of seventeen persons. The prison is called Medrese, which is a Turkish word meaning school; and this is so called, because it was formerly used by the Turks as a school. Besides myself, there are one hundred and twenty-five persons. A few days since there were one hundred and eighty. These occupy eleven small rooms, eight of which are about ten or eleven feet square, in each of which are from eight to twelve persons. The other three rooms are perhaps two or three times as large, and in each are confined twenty-five persons. From these facts you can judge of the accommodations enjoyed here. Most of them have no beds on which to sleep, and some not very warmly clad. It is enough to make one’s heart ache to see them. The sight of them made me feel that my trials and troubles were small.--Decent looking men, and the vilest malefactors; men not yet tried, and who are perhaps innocent, and those who have already been condemned for piracy, rape, and murder; the youth who has committed perhaps his first crime, or no crime at all; and those who have grown old in iniquity, and whose consciences are seared as with a hot iron, are here crowded together in one common mass, from which proceeds an odor by no means agreeable, even now when the weather is cool, and which as the weather grows warm, must become intolerable. And just think of sleeping in a little room, about ten feet square, with ten or eleven others locked in with you for the night, and only a small window in the door for air, and one by the side of it for light, darkened by its thick heavy iron gates, and looking upon a small court within. It is scarcely credible that a country so closely associated with the most enlightened kingdoms of Europe, as Greece, and a city so conversant with modern improvements in municipal economy as Athens, should be open to the reproach of such folly and cruelty, as this paragraph discloses. DOMESTIC.