The Sun. — 1857-09-14 (London, England)

THE PACIFIC.  By the West Indian .steamer Atrato, arrived at Southampton yesterday, we have files of Panama papers to the 22nd of August. The steamship New Granada arrived at Panama on the 21st of August with the South Pacific mail, and advives from Callao July 12, Valparaiso,  July 31. From Valparaiso we learn that an amnesty was granted to all peraons who on account of the part they took in the events of 1851. have been, or may be, indicted, and who reside at present in the  country. The leaders of the Conservative party, who have hitherto supported the Government, and the Liberals have united and formed a strong party against the Government. They demand a change in the Cabinet and a more liberal line of policy. Late advices announces that the Ministers had presented theirresignation, and ithad been accepted by .the President. Nothing is said as to their successors, and some persons are of opinion that the new Cabinet will not be appointed until Sept. Dates f, om Callao are to August 12, which give intelligence of the assassination of Mr. S. E. Sulivan, British Minister at Lima. The following particulars are from the Callao correspondent of the  Panama Star and Herald : "News has just been sent from Lima that Mr. Suliven, the British Minister, was assassinated by s:x Peruvians. The Vixen has gone to Palta in search of Admiral Bruce. It is supposed that he was murdered for the British interference in the mater of the Tumbes and Loa. I have just received the particulars of the affair :—Mr. Sulivan was dining alone, when six men, masked, entered and fired three shots, one of which is fatal, having entered the groin and passed up into the lungs. After the deed was done one of them exclaimed, ' I am now satisfied,' and then they all disappeared. As yet no one is suspected for it. There is a desire on the part of the Peruvians to put off the whole matter as the result of an intrigue with a lady. Be that as it ml.y, the Government feel alarmed as to what the result will be. The steamers Ucalya and Tumbes are going south to bring back General Castilla, and probably some troops." "Callao, August 12, 3 p.m.—A Frenchman and a ilegro have been just arrested on suspicion of beiug accomplices of the assassination of Mr. Sulivan. There are not the slightest hopes of his recovering. It is now reported that the act was committed by some of the most respectable persons in Lima. However, I will give you the rumour. It appears a short time ago a ball was given by one of the leading families in Lima, and that Mr. Sulivan took there a well known prostitute that he has kept atime as his mistress ; the gentlemen present remonstrated with him, calling his attenlt longrem attention to the fact that it was a gross insult to all persons present ; to which ha is said to have replied that she was as good as any woman present pr in Lima, and that they were all a set of prostitutes. Are ffard of 100 ounces is offered for the apprehension of the murderers. The steamer will be searched by the Retribution as Boons as she gets out of the harbour." ' The conduct of the Peruvian officials towards American vessels had called for the interference of the United States Minister. Private letters state that the presence of au American vessel of war was much needed on the coast. The Government of Ecuador bad notified its adhesion to the convention entered into between Peru and Chili in September, 1856. General Castillo, on his return to Callao, had been placed under arrest by the Council of Ministers, who exercised the supreme power during the absence of the President. Castillo had published a letter complaintng of this outrage. The matter was referred to the convention, which disclaimed the action of the Council. Her British Majesty's steam-frigate Retribution