The road had been built chiefly for the transportation of freight, but from the first passengers insisted on being carried, and in October, 1825, the Company began to run a daily passenger coach called the "Experiment." This coach carried six persons inside and from fifteen to twenty outside. The round trip between Stockton and Darlington was made in two hours. A fare of one shilling was charged, and each passenger was allowed fourteen pounds of baggage free. The Stockton and Darlington was the first railway in the world over which passengers and freight were hauled by steam. Stephenson was next employed to help construct a railway between Liverpool and Manchester. The most eminent engineers of the day predicted that the road could not be built. But it was built. On the fifteenth of September, 1830, Stephenson made a trial trip over the road with an improved locomotive named the "Rocket." On the trial trip the "Rocket" made twenty-nine miles an hour. This trip firmly proved the possibilities of steam as motive power on railways and started the modern era of railroad building. Other railways were quickly built and soon they radiated from London to nearly every English seaport. [Illustration: AN EARLY RAILROAD TRAIN IN ENGLANDAN EARLY RAILROAD TRAIN IN ENGLAND] Stephenson's son, Robert, assisted him in the construction of the "Rocket" and later attained considerable reputation as an engineer. It is claimed that George Stephenson was the inventor of the safety lamp for use in mines, an invention usually accredited to Sir Humphry Davy. He was often consulted in the building of subsequent railroads, but he spent the last years of his life in farming and gardening at his home at Chesterfield, England, where he died August 12, 1848. Before the days of railroads in America, freight was hauled on canals and passengers rode in stage coaches or on horseback. A coach made the trip from Boston to New York twice a week and the journey required six days. A trip from New York to Philadelphia took two days. From Philadelphia to Baltimore the roads were good, but south of Baltimore they were bad and even dangerous. South of the James River the traveler was compelled to make his journey on horseback. A coach from Charleston to Savannah was the only public conveyance south of the Potomac River.