Street Car Service.
—Now that more than one half the population of the United States live in cities makes the matter of local transportation of at least passing interest. Railroads were at first tram cars and many of them were built through the city streets, it was easy, therefore, to make of them street cars caring for such local traffic as desired to take advantage of them. They became a popular means of local transportation in the decade 1850-60. As the demand became greater the one-horse car gave way to the two-horse with its longer body and greater capacity. These not being sufficient steam locomotives were used in some cities, in others the tracks were elevated above the surface, the first in New York in 1876, or depressed below with steam locomotives operating trains of cars rapidly loaded and unloaded at stopping points about four blocks apart. In 1879 or 1880 in San Francisco where the hills were too steep for horses the cable car was designed, whereby an endless cable operated from a central station ran continuously in a trench or conduit under the track. A grip attached to the car could be made to take hold of this cable and the car was thus drawn along. Notwithstanding they were expensive to install cable cars were rapidly replacing horse-drawn cars when electric traction came in and displaced them.