George’s duty as plugman was to watch the engine, to see that it kept well in work, and that the pumps were efficient in drawing the water. When the water-level in the pit was lowered, and the suction became incomplete through the exposure of the suction-holes, it was then his duty to proceed to the bottom of the shaft and plug the tube so that the pump should draw: hence the designation of “plugman.” If a stoppage in the engine took place through any defect which he was incapable of remedying, it was for him to call in the aid of the chief engineer to set it to rights. But from the time when George Stephenson was appointed fireman, and more particularly afterwards as engineman, he applied himself so assiduously and so successfully to the study of the engine and its gearing—taking the machine to pieces in his leisure hours for the purpose of cleaning and understanding its various parts—that he soon acquired a thorough practical knowledge of its construction and mode of working, and very rarely needed to call the engineer of the colliery to his aid. His engine became a sort of pet with him, and he was never wearied of watching and inspecting it with admiration. Though eighteen years old, like many of his fellow-workmen, Stephenson had not yet learnt to read. All that he could do was to get some one to read for him by his engine fire, out of any book or stray newspaper which found its way into the neighbourhood. Buonaparte was then overrunning Italy, and astounding Europe by his brilliant succession of victories; and there was no more eager auditor of his exploits, as read from the newspaper accounts, than the young engineman at the Water-row Pit. There were also numerous stray bits of information and intelligence contained in these papers, which excited Stephenson’s interest. One of these related to the Egyptian method of hatching birds’ eggs by means of artificial heat. Curious about everything relating to birds, he determined to test it by experiment. It was spring time, and he forthwith went a birdnesting in the adjoining woods and hedges. He gathered a collection of eggs of various sorts, set them in flour in a warm place in the engine-house, covering the whole with wool, and then waited the issue. The heat was kept as steady as possible, and the eggs were carefully turned every twelve hours, but though they chipped, and some of them exhibited well-grown chicks, they never hatched. The experiment failed, but the incident shows that the inquiring mind of the youth was fairly at work.