In such an isolation nothing could save Otto and York but the abandonment during the night of their advanced positions and a retreat upon the points near the Scheldt from which they had started twenty hours before. The French forces round Lille were upon one side of them to the south and west, in number perhaps 20,000. On the other side of them, towards Courtrai, was the mass of Souham's force which they had hoped to cut off, nearly 40,000 strong. Between these two great bodies of men, the 20,000 of Otto and York were in peril of destruction if the French awoke to the position before the retirement of the second and third columns was decided on. It is here worthy of remark that the only real cause of peril was the absence of Kinsky and the Arch-Duke. Certain historians have committed the strange error of blaming Bussche for what followed. Bussche, it will be remembered, had been driven out of Mouscron early in the day, and was holding on stubbornly enough, keeping up an engagement principally by cannonade with the French upon the line of Dottignies. It is obvious that from such a position he could be of no use to the isolated Otto and York five miles away. But on the other hand, he was not expected to be of any use. What could his 4000 have done to shield the 20,000 of Otto and York from those 40,000 French under Souham's command? His business was to keep as many of the French as possible occupied away on the far north-east of the field, and that object he was fulfilling. Finally, it may be asked why, in a posture so patently perilous, Otto and York clung to their advanced positions throughout the night? The answer is simple enough. If, even during the night, the fourth and fifth columns should appear, the battle was half won. If Clerfayt, of whom they had no news, but whom they rightly judged to be by this time across the Lys, were to arrive before the French began to close in, the battle would be not half won, but all won. Between 55,000 and 60,000 men would then be lying united across the line which joined the 40,000 of the enemy to the north with the 20,000 to the south. If such a junction were effected even at the eleventh hour, so long as it took place before the 20,000 French outside Lille and the 40,000 to the north moved upon them, the allies would have won a decisive action, and the surrender of all Souham's command would have been the matter of a few hours. For a force cut in two is a force destroyed. But the night passed without Clerfayt's appearing, and before closing the story of that Saturday I must briefly tell why, though he had crossed the Lys in the afternoon, he failed to advance southward through the intervening five or six miles to Mouveaux. CLERFAYT'S COLUMN.