From the fact that its immediate cause was the almost complete failure of the potato crop, due to the rot, the great Irish famine is known as the "potato famine." The crop that suffered so was that of 1845, and the famine began in the following year and reached its climax in 1847. It is estimated that by this calamity two hundred thousand persons perished. Many compensating features in connection with this appalling distress have been pointed out. Some writers friendly toward Ireland have declared that the famine proved one of the greatest blessings to the country; that it hastened free trade, better drainage of the island, and the passage of the Land Improvement Act; that it relieved the overcrowded labor market, led to more scientific farming, and in other ways produced changes that have been of lasting benefit. But though all this be true, the misfortune itself gave to modern history one of its most harrowing chapters. The population of Ireland in 1845 is supposed to have been nearly nine millions. The manufactures were small, and the people depended on the potato crop, and had no other resource in time of scarcity. For several years the potato yield had been abundant, the country was comparatively prosperous, and the temperance movement led by Father Mathew promised a happier future. A great harvest was expected in 1845, but almost at a single stroke this expectation was blasted; for although the crop was large the greater part of it was destroyed in the ground, and the potatoes that were gathered "rotted in pit and storehouse." The farmers taxed all their means and energies to secure even a larger crop in 1846, but the blight of that year was even more fatal than the last. To pinching want was added discouragement, and the people sat in the shadow of a frightful catastrophe. In vain the British Government was called upon to give relief through Parliament, until, in the autumn of 1846, parliamentary authority was obtained to grant baronial loans. But these and every local endeavor to mitigate the suffering failed, and the destructive work of the famine continued, the number of victims increasing, to the end of that fatal year. The horrors of 1846 were more than equalled by those of the year that followed, and the woful picture presented by Sir Charles Gavan Duffy, the distinguished Irish patriot, statesman, and historian, is but too amply justified by the accepted records of the time.