The Hirsch-Duncker unions were the first in the field. They were organized in 1868 by Dr. Hirsch and Herr Franz Duncker, for the purpose of winning the labor vote for the Progressists. Dr. Hirsch went to England for his model, but the political bias he imparted to the unions was very un-English. They have grown less political and more neutral in every aspect, probably because political radicalism has dwindled, and because they contain a great many of the most skilled of German workmen, the machinists. They are a sort of aristocracy of labor, prefer peace to war, and hesitate long before striking. The Christian unions are strongest in the Rhine valley and the Westphalian mining districts. They are the offspring of Bishop Kettler's workingmen's associations, organized to keep the laborer in harmony with the Roman Catholic Church. They have undergone a great deal of change since the days of the distinguished bishop, and are now modeled after strict trade-union principles. They retain their connection with the Church and the Center Party (the Roman Catholic group in the Reichstag). For some years there has been a restlessness among these unions. The more militant members are protesting against the influence of the clergy in union affairs, and demand that laborers lead labor. The "Yellow" unions stand in bad repute among the others. They are for peace at any price. Their membership is largely composed of the engineering trades; and they are usually under contract not to strike, but settle their differences by arbitration. The employing firms contribute liberally to their union funds. By far the largest unions are the Social Democratic or "Free" unions. They embrace over eighty per cent. of all organized labor. Their growth has been very rapid during the last twenty years. In 1890, when the Socialist law was lifted, they numbered a little over 250,000; in 1910 they numbered nearly 2,000,000. As organizations, the Social Democratic unions possess all the perfection of detail and painstaking craftsmanship for which the Germans are justly celebrated.[2] Not the minutest detail is omitted; everything is done to contribute to the solidarity of the working classes. The theory of the German labor movement is, that physical environment is the first desideratum. A well-housed, well-groomed, well-fed workman is a better fighter than a hungry, ragged man; and it is for fighting that the unions exist. The bed-rock of the German workingman's theory is the maxim: "First, be a good craftsman, and all other things will be added unto you."