_January 5th._--The enemy promptly replied. There were in Fort Valerien 106 guns, in Issy 90, in Vanves 84, and in Montrouge 52; there were about 70 in the sectors of the enceinte concerned and at Villejuif, 16-cm. guns for the most part; so the attack at first was heavily taxed. But when at about noon all its batteries came into action, the situation gradually improved and the greater accuracy of the German fire told. Fort Issy had almost entirely ceased firing by two o'clock, nine guns were dismounted in Vanves, and its garrison had lost thirty men; only Montrouge still replied with vigour. The fire was now taken up by the guns of the enceinte, but the forts never again gained the upper hand of the attack. Some gunboats appearing about Point du Jour very soon had to retire. The field artillery of the IInd Bavarian and VIth Corps also co-operated so energetically that no attack was attempted from the works at Villejuif, nor was a single shot fired on the batteries at Bagneux. A number of wall-pieces and long-range Chassepots taken from the enemy did such good service that the French abandoned more and more of their rayon. The German outposts took possession of the trenches of Clamart, and in the course of the night reversed them against the defence. Only a couple of 15-cm. shells were thrown into the city itself as a serious warning; the first thing to be done was to batter down the outworks, and for some few days the firing was exclusively directed on these. A stubborn return fire came from Montrouge and from a mortar-battery in a very advantageous position behind the high railway embankment to the east of Issy; and especially from the south front of the enceinte, nearly four and a half miles long in a straight line. Foggy weather on some days necessitated the suspension or entire cessation of firing. But meanwhile the foreposts had advanced to within 815 and 490 yards of Forts Issy and Vanves respectively. New batteries were constructed further forward, and armed with thirty-six guns from those evacuated in rear. _January 10th._--The French garrison meanwhile was again displaying great activity. On January 10th it succeeded in the dark hours in surprising the weakly-held post of Clamart. Three battalions were now posted in the place, and a shelter-trench some 1300 yards long was dug connecting Clamart with Chatillon.[80] _January 13th._--The IInd Army of Paris was still outside the city on the east and north fronts from Nogent to Aubervillers. After some small alarms, on the evening of the 13th strong bodies advanced from Courneuve and Drancy against Le Bourget under cover of a heavy fire from the forts. But the troops in occupation there were on the alert, and being soon reinforced by several companies, repulsed the attempts of the French to storm it, repeated as they were until two o'clock in the morning.