[Dublin (June 8) Cor. Now York Hor.-ild.] The readers of tho Iíerald know already that about four weeks ago a memorial, signed by 138 members of Parliament (the great bnlk of whom representad Euglish and Scottish constituencies), was presented to Mr. Disraeli, praying hini to advise the Queen to pardon th! remnant of Fenian conviets who are still detained under sentence passed iu 1867 and 1868. Mr. Disraeli refused to coinply with the prayer of this memorial, alieging substaut'ially that these men were not politieal prisoners at all, bnt conviets under charges against the ordinary laws. Tbore were, he said, about oleven of them soldiers who were nndergoing punishment for niutiny. Eight of those soldiers had been sent out to Australia, but two had been since liberated ; so thereonlyremainedsix "who aro not free in that courtry. Tliey are in a position very different from that of other persons undergoing sentenco of penal servitude. " Mr. Disraoli's ref usal caused great d'sappointment to the Irish Nationalists. But we are not concerned with that jnst now. The most interesting feature of tho case was that at the moment when he was so doggedly refusing to release thoso unfortunate men they were quito, beyond his control. They had, in fact, escaped. Last Monday the rumor reached Dublin, but it was received with absolute incredulity. ConOrination, however, came quickly from three distinct sourees. Tho news bas reached the London Times ; tho Plymouth Western News, a wellinf ornied _ paper on colonial topics, had it ; an Irish priest, stationed in the colony of Western Australia, at Freemantle, the very acene of the occurrence, had writton home to his mother an ac■count of it, which is evidently truthful. The substance of all three narratives is this : On Eastcr Monday, April 17, during the temporary absence of the chicf officors of the convict depot at Freemantle, six Feniau prisoners suceeeded in withdrawing to a place about a mile off. Here they changed clothes, and, getting into fast traps, which were in readiness, they drove off to Eockingham, a place on the sea-eoast about nineteen miles from Freemontle. A boat was waiting' for them, and in it they were able to reach and get on board the Catalpa, an American whaler, that was lying to twelve miles off the land. A revenue eutter came off to the whaler, but was not allowed to soareh her. And so, it is presumed, that the prisoners whom Mr. Disraeli passionately refused to let go were already far beyond clutchés of British law. Here among the Nationalist party therois great exultation, not merely from the escape of the prisoners, but also at the fact that fate had beforehand given the haughty Premier such a slap iu the face.