According to an English report, there was one death for every two hundred and sixteen persons employed in the mines. It was estimated that one life was lost for every sixty-eight thousand tons of coal obtained. In some districts of England the proportion was one life lost for every twenty-two thousand tons. In the year 1866, six hundred and fifty-one lives were lost from explosions of fire-damp. In the previous year there were only one hundred and sixty-eight deaths from the same cause. Altogether, in the year 1866, there were fourteen hundred and eighty-four deaths from mining accidents in Great Britain alone. The total number of deaths from all violent causes in the mines of Great Britain, in ten years, was nine thousand nine hundred and sixteen. Twenty per cent. of these were caused by fire-damp explosions. The greatest number of lives lost at any one time through mining accidents was at the Oaks Colliery, in 1866, when three hundred and sixty-one miners lost their lives. [Sidenote: GREAT LOSS OF LIFE.] At the Hartley, Wigan, and Bury Collieries, many fearful accidents have taken place within the past few years, whereby many lives were lost. These accidents, in justice to the owners, or superintendents, let it be said, are not always due to the want of precaution on the part of the managers, but from gross neglect, or through non-observance of the rules under which the mine is worked. For example, the men were very careless in the use of the safety-lamps. Every lamp is locked before it is given out, and every care is taken to prevent its being opened. The men will occasionally amuse themselves by trying to pick the locks, and that, too, in places where the air is full of explosive gas. So accustomed are they to danger, that they hold it in great contempt; and the result is, that fatal accidents were much more common than if men were cautious and obedient. At the time of the Oaks Colliery explosion, great sympathy was manifested throughout England, just as was subsequently seen in the Avondale disaster in America. For days after the occurrence, the daily papers were filled with long details of the horror, the recovery of the bodies of the victims, the distressing scenes at the mouth of the mine, and at the graveyard, and the brave deeds of the men who were fortunately absent from the mine at the time of the explosion. Subscriptions were opened in nearly every church for the benefit of the survivors, and at the suggestion of Queen Victoria, the then Lord Mayor of London and Common Council held a public meeting to raise money for the families of the victims. The appeals were liberally responded to through the whole country. Many of the wives of the dead miners received life pensions, and all the bereaved families were placed above immediate want. XXXI. THE MAMMOTH CAVE.