Pretty Good.Frederick Douglass, the famous fugitive from slavery, who is said by the Eastern papers generally to be a powerful speaker, lately addresse d j the good people of Loydsville, in this State. He aoon obtained the command of their feelings, j and act them to laughing or weeping at will. To illnatrate the effect of hit eloquence, a friend tslla ua a good story. Douglass happened to say* that ha was only half black—whereupon, an Irishman who had been much excited by his appeals, exclaimed, kiPuthruk! If that mon it only half a nagur, what would a whawl ant be