and Lake Erie. The Ohio is formed by the union of the Monongahela and Allegheny at Pittsburgh. The Susquehanna, though rising in New York, is a Pennsylvania river. The Delaware forms the entire E. boundary and passes through the Delaware Water Gap, a narrow gorge, whose sides rise perpendicularly to a height of 1,200 feet. The Lehigh river joins the Delaware at Easton. This river rises in the coal regions and flows through a region of magnificent scenery. Lake Erie forms 45 miles of the N. boundary of the State and has an excellent harbor at Erie.
Geology.—The geological formations of the State are of the Azoic, Mesozoic, and Palæozoic periods. The first is situated in the S. E. and is crossed by a narrow belt of the Mesozoic. The Palæozoic formations cover the remainder of the State. Drift deposits in the shape of sand and gravel occur in the N. and N. W. counties. The Lower Silurian occurs in Lancaster, Berks, and Lehigh counties.
Mineral Production.—Pennsylvania exceeds any other States in the value of the mineral products. This is due chiefly to the production of coal. The production of anthracite coal in the State in 1919 was 86,200,000 tons, and the bituminous coal, 145,300,000 tons. Both of these figures show a considerable decrease from 1918. The bituminous coal production reached the lowest level since 1915. Over 150,000 men are employed in and about the anthracite coal mines, with about 185,000 men in and about the bituminous coal mines. Pennsylvania ranks first in the production of petroleum, but of late years the production has fallen off, while that in other States has greatly increased. The production of crude petroleum in 1918 was 7,407,812 barrels, valued at $29,606,079. The State is a large producer of natural gas. The value of the production in 1918 was $24,344,324. The production of iron ore was 515,845 tons, valued at $982,173. The pig iron produced was 14,701,252 long tons. In addition the other more important mineral products are cement, clay products, and coke. The production of the latter in 1918 was 26,723,645 short tons, valued at $160,357,274.
Agriculture.—As an agricultural State, Pennsylvania stands high. It ranks first in the United States in the production of rye, and has large crops of other cereals. The S. E. counties are remarkably fertile, Chester being noted for its nurseries, and Lancaster for its tobacco crop. The acreage, production and value of the principal crops in 1919 were as follows: corn, 1,536,000 acres, production 72,192,000 bushels, value $106,122,000; buckwheat, 256,000 acres, production 5,530,000 bushels, value, $7,742,000; oats, 1,189,000 acres, production 36,859,000 bushels, value $29,487,000; wheat, 1,664,000 acres, production 29,055,000 bushels, value $62,758,000; rye, 228,000 acres, production, 3,648,000 bushels, value $5,727,000; tobacco, 41,000 acres, production 54,120,000 pounds, value $9,200,000; hay, 2,978,000 acres, production 4,318,000 tons, value $103,632,000; potatoes, 254,000 acres, production 25,400,000 bushels, value $39,116,000. The natural forest trees include pine, poplar, beech, sugar maple, chestnut, birch, wild cherry, walnut, oak, hickory, ash, cherry, elm, sycamore, and hemlock. Considerable attention is paid to stock raising, and dairying is becoming one of the leading industries.
Manufactures.—Pennsylvania ranks second in the United States in the value of her manufactures. Besides the leading industries of coal mining, coke, iron and steel manufacture, and the production of petroleum, the State has extensive manufactures of plate and bottle glass, paper bags, rag carpets, woolen goods, glue, railroad cars, drugs and chemicals, gunpowder, leather, and lumber. Pittsburgh, Homestead, Johnstown, and Bethlehem are noted for their extensive iron works, Pittsburgh, for glass; Pittston, Hazleton, Wilkesbarre, Shenandoah, Ashland, Pottstown, and Scranton, for their anthracite coal; Monongahela City, Irwin, Mercer, Towanda, Connellsville, Johnstown, Idlewood and Philipsburg for their bituminous coal; Philadelphia for general manufactures, locomotives and ship building; Connellsville, for coke; Altoona and Reading for railroad cars and repair shops; and Scranton for its collieries and steel works. Other important manufacturing centers are Erie, Lancaster, Easton, Allentown, Chester, York, Oil City, Norristown, Carbondale, Pottsville, Harrisburg, Corry, Phœnixville, Bristol, and Titusville. In 1914 there were 27,521 manufacturing establishments, employing 924,478 wage earners. The capital invested was $8,149,411,000, and the value of the finished product $1,688,921,000.
Banking.—On Oct. 31, 1919, there were reported 838 National banks in operation, having $120,569,000 in capital, $85,072,000 in outstanding circulation, and $444,621,000 in United States bonds. There were also 224 State banks, with $19,076,000 capital, and $328,536,000 resources; 315 loan and trust companies, with $108,987,000 capital, and $152,804,000 surplus. The exchange at the United States Clearing Houses at Phila-
