During its earlier period, Irish immigration brought in a desirable class, which assimilated readily. Later, the enormous assisted immigration that followed the famine of 1846-48 brought in many of an inferior type, who huddled helplessly in the poorer quarters of our cities and became men of the spade and the hod. After the crisis was past, there again came a type that was superior to those who remained behind. Of course the acquiescent property-owning class never emigrated, and those rising in trade or in the professions rarely came unless they had fallen into trouble through their patriotism. But of the common people there is evidence that the more capable part leaked away to America. The Earl of Dunraven testifies: Those who have remained have, for the most part, been the least physically fit, the most mentally deficient, and those who correspond to the lowest industrial standard.... For half a century and more the best equipped, mentally and physically, of the population have been leaving Ireland. The survival of the unfittest has been the law, and the inevitable result, deterioration of the race, statistics abundantly prove. Owing to this exodus of the young and energetic, Ireland has become the country of old men and old women. An eighth of her people are more than sixty-five years old as against an eleventh in England. In half a century the proportion of lunatics and idiots in the population of Ireland rose from one in 657 to one in 178. In 1906 the inspector of lunatics reported: The emigration of the strong and healthy members of the community not alone increases the ratio of the insane who are left behind to the general population, but also lowers the general standard of mental and bodily health by eliminating many of the members of the community who are best fitted to survive and propagate the race. He may not have known that, compared with the rest of our immigrants, the Irish have twice their share of insanity. The commissioners of national education, after pointing with pride to half a century's great reduction of illiteracy, add: The change for the better is remarkable when it is remembered that it was the younger and better educated who emigrated ... during this period, while the majority of the illiterate were persons who were too old to leave their homes. THE IRISH IN THE STRUGGLE FOR EXISTENCE