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. History and government of Pennsylvania. A supplement to Elementary American history and government by James Albert Woodburn and Thomas Francis Moran . ills. The uncertainty ofthe stream flow and theimprovements in steamengines has tended toconcentrate the industryin the larger towns wherework people are moreavailable. A small spin-ning jenny was operatedin Philadelphia in 1775,but the factories of thestate are now chiefly concerned with producing the finished manufacture of hosiery was introduced into Pennsylvaniaat Germantown about 1698, and Philadelphia has always beenthe center
. History and government of Pennsylvania. A supplement to Elementary American history and government by James Albert Woodburn and Thomas Francis Moran . ills. The uncertainty ofthe stream flow and theimprovements in steamengines has tended toconcentrate the industryin the larger towns wherework people are moreavailable. A small spin-ning jenny was operatedin Philadelphia in 1775,but the factories of thestate are now chiefly concerned with producing the finished manufacture of hosiery was introduced into Pennsylvaniaat Germantown about 1698, and Philadelphia has always beenthe center of hosiery and knit goods manufacture of the manufacture of carpets, established in 1791, and of silkgoods two years later, are two industries in which Pennsylvanialeads the country. At first the silk manufactures were fringes,ribbons, and other trimmings, but in recent years the manufactureof broad silks has rapidly increased. Allentown, Philadelphia,Scranton, and Wilkesbarre are the centers of silk manufacturingin the state. Philadelphia produces more textiles than the twoleading textile manufacturing cities of New England Weaving Rugs HISTORY AND GOVERNMENT OF PENNSYLVANIA 39 Commerce. For many years Philadelphia was the largestcity and the chief port of the American colonies and it hasalways had an extensive commerce. In 1796, after the inaugu-ration of the new government, the exports of Philadelphiaamounted to $17,000,000, and in 1911 to about $80,000, much of the product of the state is sent elsewhere in thecountry or is shipped to other ports to be sent abroad. Approxi-mately one thousand Vessels clear from Philadelphia for foreigncountries each year. During the wars with England and Tripoliand during the Civil War period, the commerce declined. Inthe interval and since there has been a steady growth. Merchandising has always been one of the chief causes of theprosperity of this state, and the great department stores foundin its large cit
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