It is said this evening that the troops will be withdrawn and return to the Bois de Vincennes. Some say that we have left 20,000 men at Villiers and Champigny; but I take it that our loss does not exceed 6,000 men. The general idea seems to be, that to-morrow we are to try to get out in another direction, either by Chatillon or Malmaison. A pigeon came in this morning from Bourbaki, with a despatch dated Nov. 30, stating that he is advancing, and among the soldiers this despatch has already become an official notice that he is at Meaux. All I know for certain is that the ambulances are ordered out for eight o'clock to-morrow morning, and that I am now going to bed, so as to be ready to start with them. I hear that there has been fighting both yesterday and to-day near Bondy; but not being able to be in two places at once, I cannot tell what really occurred. To my civilian judgment it appears that as our object was to force the line of heights on the south-east of Paris, which constitute the Prussian lines of investment in that direction, and as we have not done so, we can hardly be said to be in a better position than we were last Monday. At a heavy cost of life we have purchased the knowledge that our new artillery is better than was expected, and that Line and Mobiles will stand under fire with tolerable steadiness until their officers are bowled over, when they break. The National Guards were not engaged. General Trochu and General Pisani tried to get some of their battalions over the Marne, but found it impossible. After a long speech from Trochu, Pisani shouted, "Vive la France!" To this they responded; but when he added, "Vive Trochu!" they remained silent, and their commanders declared that this involved political considerations with regard to which they and their men "make certain reservations." They are, however, very proud of having been within two miles of a battle field, and Trochu congratulates them, in an order of the day, upon giving a "moral support" to the army. This is precisely what every one is willing to do. Moral support will not, however, get the Prussians away from Paris.