AFTER a year of varying fortunes and terrible suffering, the Crimean campaign has at last reached its turning point. From the 1st inst. to the 8th the Russian telegraphic dispatches admit that considerable damage had been done to the lines of Sevastopol by the allied fire, and that the damage had been repaired "as much as possible," and no more. Finally, on the 8th about noon, the Allies stormed four of the bastions—were defeated at one, carried two; but were again compelled to leave them, though they finally maintained themselves in the fourth, and what was most important, on the Malakoff Hill. The loss of this point forced the Russians on the 9th to march their troops from the southern to the northern side, and thus to abandon the town of Sevastopol, after having exploded their magazines, blown up their buildings, ruined the defensive works by springing mines under them, and converted, to use Gen. Pelissier's words, the whole place into an immense blazing furnace; they also burnt their steamers, sunk their last ships-of-war, and finally broke up the bridge near Fort Paul.—Com. Reg.