For instance, a man who wishes to be a carpenter must have a different kind of a hook on his new hand from that of the man who wishes to be a blacksmith. The man who has lost his arm at the shoulder must have a different hook from the man who has lost his at the elbow. [Illustration: _One-Armed and One-Legged Soldiers Learning Farming._] [Illustration: _Crippled German Soldiers Learning to Letter._] All this means much experimenting as there are so many different trades in the world, and the crippled man wishes if possible to follow the same trade he had before the war. In many cases it is not possible to do this, and there have been mapped out fifty-one new trades at which crippled men can work. The government has established schools where these trades can be learned without any charge to the soldier. [Illustration: _Factory for Making Artificial Limbs in Berlin._] [Illustration: _Armless Soldier Learning a New Trade._] One of the most famous of these schools is in Berlin, the Oscar-Helene-Heim. Before the war this was a hospital for crippled children with a school for them where they could learn trades. Since the war they have made additions to the place, and soldiers can go here to learn a trade. The head of this institution is Professor Biesalski, the man who has invented many of the different kinds of arms and legs. The Biesalski arm is very simple and is made out of nickel, and tools fasten into the holder with screws. [Illustration: _Riding the Bicycle Before Receiving the New Leg._] I went all through this home. They have a carpentry department, a shoe-making department, a basket-weaving department, and a gardening department. There were a number of soldiers here without legs, but the home makes a specialty of helping soldiers without arms, and this is the far more difficult task. I saw some men with both arms gone, and in these sad cases they have implements for holding everything, tools, knives, forks, spoons, cups, cigars and indeed everything that a man would want to hold. [Illustration: _After Receiving the New Leg._] The artificial legs are also most wonderful. One army captain who had lost his leg at the thigh was able to mount his horse nine weeks after his leg had been amputated, and two weeks later he joined his regiment in the field. Another chap just nineteen years of age and who had lost his leg, enlisted in the aviation squad, and now he is one of the best flyers in the German army. [Illustration: _A Legless Soldier Learning to Walk._]