At last the strength of the English diminished to such a point that they were at length incapable of holding the long line of trenches, and they were obliged to ask the French to relieve them, which they did by taking over the right of our attack, a measure which placed them opposite to the two Russian positions of the Mamelon and Malakoff batteries, which proved to be the keys of Sebastopol. As spring came on matters brightened fast. English contractors sent out large bodies of navvies, and began to lay down a railway from Balaklava to the front, reinforcements poured in, and the health of the troops began to improve. Troops of transport animals from every country on the Mediterranean were landed. A village of shops, set up by enterprising settlers, was started two miles out of Balaklava. Huts sprang up in all directions, and all sorts of comforts purchased by the subscriptions of the English people when they heard of the sufferings of their soldiers, were landed and distributed. The work of getting up siege guns and storing ammunition for a re-opening of the bombardment in earnest, went on merrily, and the arrival of 15,000 Turkish troops, and of nearly 20,000 Sardinians, who pitched their camps on the plain, rendered the allies secure from an attack in that direction, and enabled them to concentrate all their efforts on the siege. So far the success had lain wholly with the Russians. For every earthwork and battery raised and armed by the allies, the Russians threw up two, and whereas when our armies arrived before it on 25th September, Sebastopol was little more than an open town, which could have been carried by the first assault, it was now a fortified place, bristling with batteries in every direction, of immense strength, and constructed upon the most scientific principles. Many of their works, especially the Mamelon, Malakoff, and Tower batteries, were fortresses in themselves, with refuges dug deeply in the earth, where the garrison slept, secure from the heaviest fire of our guns, and surrounded by works on every side. In the trenches it was the Russians who were always the aggressors. Sortie after sortie was made throughout the winter, and in these the Russians often obtained possession for a time of portions of our trenches or those of the French. Along in front of their works the ground was studded with rifle-pits, sometimes so close to our works that it was impossible for a man to show his head above them, and the artillerymen were frequently unable to work their guns, owing to the storm of bullets which the Russians sent through the embrasures whenever a sign of movement was discerned. In the desperate fights in darkness in the trenches we lost more men than in either of the pitched battles of the campaign; and it was only the dogged courage of our soldiers and the devotion of the officers which enabled us to maintain our footing in the trenches before the city which we were supposed to be besieging.