In 1683 Penn laid out in large squares, between the Delaware and Schuylkill rivers, the beginning of a great city. This city he called Philadelphia, a word which means "brotherly love." At that time the so-called city had an area of 2 square miles and a population of only 400. To-day Philadelphia has an area of nearly 130 square miles and a population of more than a million and a half. It is America's third city in population, and it ranks third among the manufacturing cities of the United States. Philadelphia is on the Delaware River, a hundred miles from the ocean, but it has all the advantages of a seaport, for the river is deep enough to let great ocean steamers navigate to the city's docks. Philadelphia's easy access to the vast stores of iron, coal, and petroleum, for which Pennsylvania is famous, its location on two tidewater rivers,--the Delaware and the Schuylkill,--and its important railroads, all have helped to make it a great industrial and commercial center. One half of the anthracite coal in the United States is mined in Pennsylvania. Much of it is shipped to Philadelphia and from there by rail and water to many other states and countries. [Illustration: THE OLD STAGE WHICH JOURNEYED FROM PHILADELPHIA TO PITTSBURGH] Some of the greatest manufacturing plants in the United States, in fact in the world, are in Philadelphia. In certain branches of the textile, or woven-goods, industry Philadelphia is unsurpassed. In the making of woolen carpets she leads the world. This industry goes back to Revolutionary times, when the first yard of carpet woven in the United States came from a Philadelphia loom. In 1791 a local manufacturer made a carpet, adorned with patriotic emblems, for the United States Senate. Other important industries of the city include the manufacturing of woolen and worsted goods, hosiery and knit goods, rugs, cotton goods, felt hats, silk goods, cordage, and twine and the dyeing and finishing of textiles. The largest lace mill in the world is in Philadelphia. [Illustration: OLD IRONSIDES] Philadelphia is also noted for the manufacture of iron and steel. The largest single manufactory in Philadelphia is the Baldwin Locomotive Works, which is the greatest of its kind. Pictures of the old Flying Machine, a stagecoach which made trips to New York in 1776, and of Old Ironsides, the first locomotive built by Matthias W. Baldwin in 1832, seem very queer in comparison with the powerful 300-ton locomotives built in Philadelphia to-day. Old Ironsides weighed a little over 4 tons and lacked power to pull a loaded train on wet and slippery rails; hence the following notice which appeared in the newspapers: "The locomotive engine built by Mr. M. W. Baldwin of this city will depart daily when the weather is fair with a train of passenger cars. On rainy days horses will be attached."