The gentlemen seem inclined to pass the night in talking. We think of lying down, and sleeping if we can. I hope nothing will happen in the night, for everything seems worse in the darkness and consequent confusion.

21st.—After passing a sleepless night, listening to the roaring of cannon, and figuring to ourselves the devastation that must have taken place, we find to our amusement that nothing decisive has occurred. The noise last night was mere skirmishing, and half the cannons were fired in the air. In the darkness there was no mark. But though the loss on either side is so much less than might have been expected, the rebels in the palace cannot be very comfortable, for they say that the air is infected by the number of unburied dead bodies lying there; indeed there are many lying unburied on the streets, which is enough to raise a fever, to add to the calamitous state of things.

The government bulletin of to-day expresses the regret of the supreme magistrate at seeing his hopes of restoring peace frustrated, and publishes the assurances of fidelity which they have received from all the departments, especially from Puebla, Queretaro, and Vera Cruz, in spite of the extraordinary despatches which had there been received from Farias, desiring them to recognize Urrea as Minister of war, and Don Manuel Crecencio Rejon as Minister of the interior; "which communications," says the commandant of Queretaro, "produced in my soul only indignation and contempt towards their miserable authors."

The account of the yesterday's affair is as follows. "The pronunciados in the palace, knowing that the infantry which was to come from Puebla to the assistance of the government, was expected to arrive yesterday, endeavoured to surprise it near the gate of Saint Lazarus, with a column of infantry of two hundred in number, and some cavalry; but the brave Colonel Torrejon, with eighty dragoons, beat them completely, killing, wounding, and taking many prisoners, and pursuing them as far as the archbishop's palace. The supreme government, appreciating the distinguished services and brilliant conduct of the aforesaid colonel, have given him the rank of general of brigade."

The president in to-day's proclamation, after declaring that "the beautiful capital of the republic is the theatre of war," says "that nothing but consideration for the lives and properties of the inhabitants has been able to restrain the enthusiasm of the soldiers of the nation, and to prevent them from putting forth their whole force to dislodge the rebels from the different points of which they have possessed themselves." The president adds, "that this revolt is the more inexcusable, as his administration has always been gentle and moderate; that he has economized the public treasure, respected the laws, and that citizens of whatever opinion had always enjoyed perfect tranquillity under his rule—that constitutional reforms were about being realized, as well as the hopes of forming by them a bond of union between all Mexicans." He concludes by reproaching those revolutionary men who thus cause the shedding of so much innocent blood.

The commander-in-chief, General Valencia, writing perhaps under some inspiring influence, is more figurative in his discourse. "Soldiers of Liberty!" he exclaims; "Anarchy put out its head, and your arms drowned it in a moment." This would have been a finer figure in the days of the great lakes. And again he exclaims—"Mexicans! my heart feels itself wounded by the deepest grief, and all humanity shudders in contemplating the unsoundable chaos of evils in which the authors of this rebellion have sunk the incautious men whom they have seduced, in order to form with their dead bodies the bloody ladder which was to raise them to their aggrandizement! Already the Mexican people begin to gather the bitter fruits with which these men who blazon forth their humanity and philanthropy have always allured them, feeding themselves on the blood of their brothers, and striking up songs to the sad measure of sobs and weeping!" These tropes are very striking. All is brought before us as in a picture. We see anarchy raising his rascally head above the water (most likely adorned with a liberty cap), and the brave soldiers instantly driving it down again. We behold Gomez Farias and Urrea rushing up a ladder of dead bodies. And then the Lucrezia Borgia kind of scene that follows!—alluring their victims with bitter fruit (perhaps with sour grapes), drinking blood, and singing horridly out of tune to a running bass of sobs! The teeth of humanity are set on edge only by reading it. Well may his Excellency add—"I present them to the nations of the world as an inimitable model of ferocity and barbarity!"

This morning General ——- sent a few lines from the citadel, where he and the president are, in which he speaks with confidence of speedily putting down the rebels. C—-n returned many affectionate messages, accompanied by a supply of cigars. They say that the greatest possible bravery is shown by the boys of the Military College, who are very fine little fellows, and all up in arms on the side of the government. A strong instance of maternal affection and courage was shown by the Señora G—— this morning. Having received various reports concerning her son, who belongs to this college; first that he was wounded; then that the wound was severe; then that it was slight—and being naturally extremely uneasy about him, she set off alone, and on foot, at five o'clock in the morning, without mentioning her intention to any one, carrying with her a basket of provisions; passed across the square, and through all the streets planted with cannon, made her way through all the troops into the citadel; had the satisfaction of finding her son in perfect health, and returned home, just as her husband and family had become aware of her absence.

General Valencia is said to have a large party amongst the soldiers, who are in favour of his being named president. It is said that he was seen riding up and down in the lines in a most spirited manner, and rather unsteady in his saddle. Some rumours there are that Santa Anna has arrived at Perote; but, as he travels in a litter, he cannot be here for some days, even should this be true. There seems no particular reason to believe that this will end soon, and we must remain shut up here as patiently as we can. In the intervals of firing the gentlemen go out, but they will not hear of our doing so, except sometimes for a few minutes in the evening, and then either firing or thunder sends us back. Various people, and especially the Countess C—-a, have invited us to their country places; but, besides that we are in the safest part of the city, and have several guests, C—-n does not think it right for him to leave Mexico. They say that house-rents will rise hereabouts, on account of the advantages of the locale in cases of this sort.

Amongst other announcements, the government have published, that the rebels have demanded that the jewels, together with the service of gold and silver belonging to the Holy Cathedral Church, shall be given up to them, and threaten to seize the whole by force, should their demand not be acceded to within two hours. "It is very probable that they will do so," adds the bulletin; thus adding a new crime to all they have committed.

It is now evening, and again they announce an attack upon the palace, but I do not believe them, and listen to the cannon with tolerable tranquillity. All day families continue to pass by, leaving Mexico. The poor shopkeepers are to be pitied. Besides the total cessation of trade, one at least has been shot, and others plundered. A truce of two hours was granted this afternoon, to bury the dead, who were carried out of the palace. Two of our colleagues ventured here this morning.