The most marked advances from 1900 to 1905 were in worsted goods (61.4%) structural iron-work (60%), and tin and terne-plate (54.4%) Philadelphia is the great manufacturing centre.
The silk and cement industries are confined largely to the eastern cities and boroughs; the coke, tin and terne-plate, and pickling industries to the western; and the construction and repair of railway cars to Altoona, Meadville, Dunmore, and repair of railway cars to Altoona, Meadville, Dunmore, Chambersburg, Butler and Philadelphia.
The outstanding type is shown in such pieces as Holland's (q.v.) Buke of the Howlat, and in the anonymous poems Golagros and Gawane, The Awntyrs of Arthur at the Terne Wathelyne, Rauf Coil3ear and The Pistill of Susan.
Bituminous coal and natural gas abound in the vicinity, and iron, steel, and tin and terne plate are extensively manufactured in the city, the tin-plate plant being one of the most important in the United States.
Among manufactures are iron and steel, tin and terne plate, glass, paper and wood pulp, and pottery.