"Meet Hussey whenever you can and put him down," Cyrus McCormick wrote to his brothers. In one letter, written the following year, he is so enthusiastically aggressive in the pursuit of Hussey that he proposes to his brothers a grand final contest. Hussey is to be dared to sign an agreement that in case of defeat, he will pay McCormick $10,000 and become the Maryland agent for the McCormick Reaper. McCormick, on his part, is to agree that if he is beaten he will pay Hussey $10,000 and become the Virginia agent for the Hussey machine. Nothing came of this confident proposal, either because it was not put into effect by McCormick, because Hussey refused to accept it. But the field test flourished for more than forty years. It did more in the earlier days than any other one thing to make talk about the Reaper and to move the farmers out of the old-fashioned ruts. It provided the vaudeville element which is necessary in salesmanship where people are not interested in the commodity itself. As often happens, it was in the end carried too far. It became the most costly weapon of competition. It introduced all manner of unfairness and often violence. The most absurd tests were frequently agreed to. Mowers would be chained back to back and then forcibly torn apart. Reapers were driven into groves of saplings. Machines of special strength were made secretly. And so the warfare raged, until by general consent the field test was abandoned. These six factors of the McCormick System became the six commandments of the farm machinery business. They were largely adopted by his competitors, and exist to-day, with the exception of the exclusive contract and the field test. By 1850 McCormick had not only solved the problem of the Reaper; he had worked out a method of distribution. He had established a new business. But even this was not enough. He was now beset by a swarm of manufacturers who sought to deprive him of his patents and of a business which he naturally regarded as his own. It remained to be seen whether he could stand his ground when opposed by several hundred rivals; and whether he could duplicate in the courts the victories that he had won in the fields. CHAPTER VI THE STRUGGLE TO PROTECT PATENTS In 1848 Cyrus McCormick's original patent expired. He applied to have it extended, and at once there began one of the most extraordinary legal wars ever known in the history of the Patent Office. It continued with very little cessation until 1865. It enlisted on one side or the other the ablest lawyers of that period--such giants of the bar as Lincoln, Stanton, Seward, Douglas, Harding, Watson, Dickerson, and Reverdy Johnson. The tide of battle rolled from court to court until the final clash came in the chamber of the Supreme Court and the halls of Congress. It was perhaps the most Titanic effort that any American inventor has ever made to protect his rights and to carry out the purpose of the Patent Law.