“Now, I'll take you, please,” said the medical man, motioning Johnston to rise. “I am slightly nervous,” apologized the latter, as he stood up and awkwardly fumbled the buttons of his coat. “Nervousness is a mental disease,” said the man, with professional brusqueness; “it has nothing to do with the body except to dominate it at times. If you pass your examination you may live to overcome it.” The American looked furtively at Thorndyke, but the head of the Englishman had sunk on his breast and he seemed to be asleep. Johnston had never felt so lonely and forsaken in his life. From his childhood he had entertained a secret fear that he had inherited heart disease, and like Maupassant's “Coward,” who committed suicide rather than meet a man in a duel, he had tried in vain to get away from the horrible, ever-present thought by plunging into perilous adventures. At that moment he felt that he would rather die than know the worst from the uncanny instrument that had just tortured his strong comrade till he was overcome with exhaustion. “I never felt better in my life,” he said falteringly, but it seemed to him that every nerve and muscle in his frame was withering through fear. His tongue felt clumsy and thick and his knees were quivering as with ague. “Stand still,” ordered the physician sternly, and Johnston was further humiliated by having Tradmos sympathetically catch hold of his arm to steady him. “Your people are far advanced in the sciences,” went on the physician coldly, “but there are only a few out of their number who know that the mind governs the body and that fear is its prime enemy. Five minutes ago you were eating heartily and had your share of physical strength, and yet the mere thought that you are now to know the actual condition of your most vital organ has made you as weak as an infant. If you kept up this state of mind for a month it would kill you. “Now listen,” he went on, as the instrument gripped Johnston's flesh and the rubber tube began to twist and move as if charged with electricity. The American held his breath. A sound as of water being forced through channels that were choked, mingled with a wheezing sound like wind escaping from a broken bellows came from the bell. “Your frame is all right,” said the medical man, as he released the trembling American, “but you have long believed in the weakness of your heart and it has, on that account, become so. You must banish all fear from your thoughts. You perhaps know that we have a place specially prepared for those who are not physically sound. I am sorry that you do not stand a better examination.” Tradmos regarded the American with a look of sympathy as he gave him a chair and then rang a bell on the table. Thorndyke looked up sleepily, as an attendant entered with a couple of parcels, and glanced wonderingly at his friend's white face and bloodshot eyes.