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°´¼üÅÌÉÏ·½Ïò¼ü ¡û »ò ¡ú ¿É¿ìËÙÉÏÏ·­Ò³£¬°´¼üÅÌÉ쵀 Enter ¼ü¿É»Øµ½±¾ÊéĿ¼ҳ£¬°´¼üÅÌÉÏ·½Ïò¼ü ¡ü ¿É»Øµ½±¾Ò³¶¥²¿£¡
tion¡¡that¡¡was¡¡enjoyed¡£¡¨¡¡As¡¡for¡¡the¡¡road¡¡between¡¡the¡¡Potomac¡¡and¡¡the¡¡Cheat¡¡or¡¡the¡¡Monongahela£»¡¡the¡¡records¡¡at¡¡hand¡¡do¡¡not¡¡show¡¡that¡¡the¡¡money¡¡voted¡¡for¡¡that¡¡enterprise¡¡had¡¡been¡¡used¡£

The¡¡Potomac¡¡Company¡¡nevertheless¡¡had¡¡accomplished¡¡something£º¡¡it¡¡had¡¡acquired¡¡an¡¡asset¡¡of¡¡the¡¡greatest¡¡valuea¡¡right¡¡of¡¡way¡¡up¡¡the¡¡strategic¡¡Potomac¡¡Valley£»¡¡and¡¡it¡¡had¡¡furnished¡¡an¡¡object¡¡lesson¡¡to¡¡men¡¡in¡¡other¡¡States¡¡who¡¡were¡¡struggling¡¡with¡¡a¡¡similar¡¡problem¡£¡¡When£»¡¡as¡¡will¡¡soon¡¡be¡¡apparent£»¡¡New¡¡York¡¡men¡¡undertook¡¡the¡¡improvement¡¡of¡¡the¡¡Mohawk¡¡waterway¡¡there¡¡was¡¡no¡¡pattern¡¡of¡¡canal¡¡construction¡¡for¡¡them¡¡to¡¡follow¡¡in¡¡America¡¡except¡¡the¡¡inadequate¡¡wooden¡¡locks¡¡erected¡¡along¡¡the¡¡Potomac¡£¡¡It¡¡is¡¡interesting¡¡to¡¡know¡¡that¡¡Elkanah¡¡Watson£»¡¡prominent¡¡in¡¡inland¡¡navigation¡¡to¡¡the¡¡North£»¡¡went¡¡down¡¡from¡¡New¡¡York¡¡in¡¡order¡¡to¡¡study¡¡these¡¡wooden¡¡locks¡¡and¡¡that¡¡New¡¡Yorkers¡¡adopted¡¡them¡¡as¡¡models£»¡¡though¡¡they¡¡changed¡¡the¡¡material¡¡to¡¡brick¡¡and¡¡finally¡¡to¡¡stone¡£

Pennsylvania¡¡had¡¡been¡¡foremost¡¡among¡¡the¡¡colonies¡¡in¡¡canal¡¡building£»¡¡for¡¡it¡¡had¡¡surveyed¡¡as¡¡early¡¡as¡¡1762¡¡the¡¡first¡¡lock¡¡canal¡¡in¡¡America£»¡¡from¡¡near¡¡Reading¡¡on¡¡the¡¡Schuylkill¡¡to¡¡Middletown¡¡on¡¡the¡¡Susquehanna¡£¡¡Work£»¡¡however£»¡¡had¡¡to¡¡be¡¡suspended¡¡when¡¡Pontiac's¡¡Rebellion¡¡threw¡¡the¡¡inland¡¡country¡¡into¡¡a¡¡panic¡£¡¡But¡¡the¡¡enterprise¡¡of¡¡Maryland¡¡and¡¡Virginia¡¡in¡¡1785¡¡in¡¡developing¡¡the¡¡Potomac¡¡aroused¡¡the¡¡Pennsylvanians¡¡to¡¡renewed¡¡activity¡£¡¡The¡¡Society¡¡for¡¡Promoting¡¡the¡¡Improvement¡¡of¡¡Roads¡¡and¡¡Inland¡¡Navigation¡¡set¡¡forth¡¡a¡¡programme¡¡that¡¡was¡¡as¡¡broad¡¡as¡¡the¡¡Keystone¡¡State¡¡itself¡£¡¡Their¡¡ultimate¡¡object¡¡was¡¡to¡¡capture¡¡the¡¡trade¡¡of¡¡the¡¡Great¡¡Lakes¡£¡¡¡¨If¡¡we¡¡turn¡¡our¡¡view£»¡¨¡¡read¡¡the¡¡memorial¡¡which¡¡the¡¡Society¡¡presented¡¡to¡¡the¡¡Legislature£»¡¡¡¨to¡¡the¡¡immense¡¡territories¡¡connected¡¡with¡¡the¡¡Ohio¡¡and¡¡Mississippi¡¡waters£»¡¡and¡¡bordering¡¡on¡¡the¡¡Great¡¡Lakes£»¡¡it¡¡will¡¡appear¡£¡£¡£¡¡that¡¡our¡¡communication¡¡with¡¡those¡¡vast¡¡countries¡¡£¨considering¡¡Fort¡¡Pitt¡¡as¡¡the¡¡port¡¡of¡¡entrance¡¡upon¡¡them£©¡¡is¡¡as¡¡easy¡¡and¡¡may¡¡be¡¡rendered¡¡as¡¡cheap£»¡¡as¡¡to¡¡any¡¡other¡¡port¡¡on¡¡the¡¡Atlantic¡¡tide¡¡waters¡£¡¨

Pennsylvania£»¡¡lying¡¡between¡¡Virginia¡¡and¡¡New¡¡York£»¡¡occupied¡¡a¡¡peculiar¡¡position¡£¡¡Her¡¡Susquehanna¡¡Valley¡¡stretched¡¡northwestnot¡¡so¡¡directly¡¡west¡¡as¡¡did¡¡the¡¡Potomac¡¡on¡¡the¡¡south¡¡and¡¡the¡¡Mohawk¡¡on¡¡the¡¡north¡£¡¡This¡¡more¡¡northerly¡¡trend¡¡led¡¡these¡¡early¡¡Pennsylvania¡¡promoters¡¡to¡¡believe¡¡that£»¡¡while¡¡they¡¡might¡¡¡¨only¡¡have¡¡a¡¡share¡¡in¡¡the¡¡trade¡¡of¡¡those¡¡£§the¡¡Ohio£§¡¡waters£»¡¨¡¡they¡¡could¡¡absolutely¡¡secure¡¡for¡¡themselves¡¡the¡¡trade¡¡of¡¡the¡¡Great¡¡Lakes£»¡¡¡¨taking¡¡Presq'¡¡Isle¡¡£§Erie£»¡¡Pennsylvania£§¡¡which¡¡is¡¡within¡¡our¡¡own¡¡State£»¡¡as¡¡the¡¡great¡¡mart¡¡or¡¡place¡¡of¡¡embarkation¡£¡¨

The¡¡plan¡¡which¡¡the¡¡Society¡¡proposed¡¡involved¡¡the¡¡improvement¡¡of¡¡water¡¡and¡¡land¡¡routes¡¡by¡¡way¡¡of¡¡the¡¡Delaware¡¡to¡¡Lake¡¡Ontario¡¡and¡¡Lake¡¡Otsego£»¡¡and¡¡of¡¡eight¡¡routes¡¡by¡¡the¡¡Susquehanna¡¡drainage£»¡¡north£»¡¡northwest£»¡¡and¡¡west¡£¡¡A¡¡bill¡¡which¡¡passed¡¡the¡¡Legislature¡¡on¡¡April¡¡13£»¡¡1791£»¡¡appropriated¡¡money¡¡for¡¡these¡¡improvements¡£¡¡Work¡¡was¡¡begun¡¡immediately¡¡on¡¡the¡¡Schuylkill¡­Susquehanna¡¡Canal£»¡¡but¡¡only¡¡four¡¡miles¡¡had¡¡been¡¡completed¡¡by¡¡1794£»¡¡when¡¡the¡¡Lancaster¡¡Turnpike¡¡directed¡¡men's¡¡attention¡¡to¡¡improved¡¡highways¡¡as¡¡an¡¡alternative¡¡more¡¡likely¡¡than¡¡canals¡¡to¡¡provide¡¡the¡¡desired¡¡facilities¡¡for¡¡inland¡¡transportation¡£¡¡The¡¡work¡¡on¡¡the¡¡canal¡¡was¡¡renewed£»¡¡however£»¡¡in¡¡1821£»¡¡when¡¡the¡¡rival¡¡Erie¡¡Canal¡¡was¡¡nearing¡¡completion£»¡¡and¡¡was¡¡finished¡¡in¡¡1827¡£¡¡It¡¡became¡¡known¡¡as¡¡the¡¡Union¡¡Canal¡¡and¡¡formed¡¡a¡¡link¡¡in¡¡the¡¡Pennsylvania¡¡canal¡¡system£»¡¡the¡¡development¡¡of¡¡which¡¡will¡¡be¡¡described¡¡in¡¡a¡¡later¡¡chapter¡£

In¡¡New¡¡York¡¡State£»¡¡throughout¡¡the¡¡period¡¡of¡¡the¡¡Old¡¡French¡¡and¡¡the¡¡Revolutionary¡¡wars£»¡¡barges¡¡and¡¡keel¡¡boats¡¡had¡¡plied¡¡the¡¡Mohawk£»¡¡Wood¡¡Creek£»¡¡and¡¡the¡¡Oswego¡¡to¡¡Lake¡¡Ontario¡£¡¡Around¡¡such¡¡obstructions¡¡as¡¡Cohoes¡¡Falls£»¡¡Little¡¡Falls£»¡¡and¡¡the¡¡portage¡¡at¡¡Rome¡¡to¡¡Wood¡¡Creek£»¡¡wagons£»¡¡sleds£»¡¡and¡¡pack¡­horses¡¡had¡¡transferred¡¡the¡¡cargoes¡£¡¡To¡¡avoid¡¡this¡¡labor¡¡and¡¡delay¡¡men¡¡soon¡¡conceived¡¡of¡¡conquering¡¡these¡¡obstacles¡¡by¡¡locks¡¡and¡¡canals¡£¡¡As¡¡early¡¡as¡¡1777¡¡the¡¡brilliant¡¡Gouverneur¡¡Morris¡¡had¡¡a¡¡vision¡¡of¡¡the¡¡economic¡¡development¡¡of¡¡his¡¡State¡¡when¡¡¡¨the¡¡waters¡¡of¡¡the¡¡great¡¡western¡¡inland¡¡seas¡¡would£»¡¡by¡¡the¡¡aid¡¡of¡¡man£»¡¡break¡¡through¡¡their¡¡barriers¡¡and¡¡mingle¡¡with¡¡those¡¡of¡¡the¡¡Hudson¡£¡¨

Elkanah¡¡Watson¡¡was¡¡in¡¡many¡¡ways¡¡the¡¡Washington¡¡of¡¡New¡¡York¡£¡¡He¡¡had¡¡the¡¡foresight£»¡¡patience£»¡¡and¡¡persistence¡¡of¡¡the¡¡Virginia¡¡planter¡£¡¡His¡¡¡¨Journal¡¨¡¡of¡¡a¡¡tour¡¡up¡¡the¡¡Mohawk¡¡in¡¡1788¡¡and¡¡a¡¡pamphlet¡¡which¡¡he¡¡published¡¡in¡¡1791¡¡may¡¡be¡¡said¡¡to¡¡be¡¡the¡¡ultimate¡¡sources¡¡in¡¡any¡¡history¡¡of¡¡the¡¡internal¡¡commerce¡¡of¡¡New¡¡York¡£¡¡As¡¡a¡¡result£»¡¡a¡¡company¡¡known¡¡as¡¡¡¨The¡¡President£»¡¡Directors£»¡¡and¡¡Company¡¡of¡¡the¡¡Western¡¡Inland¡¡Lock¡¡Navigation¡¡in¡¡the¡¡State¡¡of¡¡New¡¡York£»¡¨¡¡with¡¡a¡¡capital¡¡stock¡¡of¡¡25£»000£»¡¡was¡¡authorized¡¡by¡¡act¡¡of¡¡legislature¡¡in¡¡March£»¡¡1792£»¡¡and¡¡the¡¡State¡¡subscribed¡¡for¡¡12£»500¡¡in¡¡stock¡£¡¡Many¡¡singular¡¡provisions¡¡were¡¡inserted¡¡in¡¡this¡¡charter£»¡¡but¡¡none¡¡more¡¡remarkable¡¡than¡¡one¡¡which¡¡stipulated¡¡that¡¡all¡¡profits¡¡over¡¡fifteen¡¡per¡¡cent¡¡should¡¡revert¡¡to¡¡the¡¡State¡¡Treasury¡£¡¡This¡¡hint¡¡concerning¡¡surplus¡¡profits£»¡¡however£»¡¡did¡¡not¡¡cause¡¡a¡¡stampede¡¡when¡¡the¡¡books¡¡were¡¡opened¡¡for¡¡subscriptions¡¡in¡¡New¡¡York¡¡and¡¡Albany¡£¡¡In¡¡later¡¡years£»¡¡when¡¡the¡¡Erie¡¡Canal¡¡gave¡¡promise¡¡of¡¡a¡¡new¡¡era¡¡in¡¡American¡¡inland¡¡commerce£»¡¡Elkanah¡¡Watson¡¡recalled¡¡with¡¡a¡¡grim¡¡satisfaction¡¡the¡¡efforts¡¡of¡¡these¡¡early¡¡days¡£¡¡The¡¡subscription¡¡books¡¡at¡¡the¡¡old¡¡Coffee¡¡House¡¡in¡¡New¡¡York£»¡¡he¡¡tells¡¡us£»¡¡lay¡¡open¡¡three¡¡days¡¡without¡¡an¡¡entry£»¡¡and¡¡at¡¡Lewis's¡¡tavern¡¡in¡¡Albany£»¡¡where¡¡the¡¡books¡¡were¡¡opened¡¡for¡¡a¡¡similar¡¡period£»¡¡¡¨no¡¡mortal¡¨¡¡had¡¡subscribed¡¡for¡¡more¡¡than¡¡two¡¡shares¡£

The¡¡system¡¡proposed¡¡for¡¡the¡¡improvement¡¡of¡¡the¡¡waterways¡¡of¡¡New¡¡York¡¡was¡¡similar¡¡to¡¡that¡¡projected¡¡for¡¡the¡¡Potomac¡£¡¡A¡¡canal¡¡was¡¡to¡¡be¡¡cut¡¡from¡¡the¡¡Mohawk¡¡to¡¡the¡¡Hudson¡¡in¡¡order¡¡to¡¡avoid¡¡Cohoes¡¡Falls£»¡¡a¡¡canal¡¡with¡¡locks¡¡would¡¡overcome¡¡the¡¡forty¡­foot¡¡drop¡¡at¡¡Little¡¡Falls£»¡¡another¡¡canal¡¡over¡¡five¡¡thousand¡¡feet¡¡in¡¡length¡¡was¡¡to¡¡connect¡¡the¡¡Mohawk¡¡and¡¡Wood¡¡Creek¡¡at¡¡Rome£»¡¡minor¡¡improvements¡¡were¡¡to¡¡be¡¡made¡¡between¡¡Schenectady¡¡and¡¡the¡¡mouth¡¡of¡¡the¡¡Schoharie£»¡¡and¡¡finally¡¡the¡¡Oswego¡¡Falls¡¡at¡¡Rochester¡¡were¡¡to¡¡be¡¡circumvented¡¡also¡¡by¡¡canal¡£¡¡All¡¡the¡¡objections£»¡¡difficulties£»¡¡and¡¡discouragements¡¡which¡¡had¡¡attended¡¡efforts¡¡to¡¡improve¡¡waterways¡¡elsewhere¡¡in¡¡America¡¡confronted¡¡these¡¡New¡¡York¡¡promoters¡£¡¡They¡¡began¡¡in¡¡1793¡¡at¡¡Little¡¡Falls¡¡but¡¡were¡¡soon¡¡forced¡¡to¡¡cease¡¡owing¡¡to¡¡the¡¡failure¡¡of¡¡funds¡£¡¡Under¡¡the¡¡encouraging¡¡spur¡¡of¡¡a¡¡state¡¡subscription¡¡to¡¡two¡¡hundred¡¡shares¡¡of¡¡stock£»¡¡they¡¡renewed¡¡their¡¡efforts¡¡in¡¡1794¡¡but¡¡were¡¡again¡¡forced¡¡to¡¡abandon¡¡the¡¡work¡¡before¡¡the¡¡year¡¡had¡¡passed¡£¡¡By¡¡November£»¡¡1795£»¡¡however£»¡¡they¡¡had¡¡completed¡¡the¡¡canal¡¡and¡¡in¡¡thirty¡¡days¡¡had¡¡received¡¡toll¡¡to¡¡the¡¡amount¡¡of¡¡about¡¡four¡¡hundred¡¡dollars¡£

The¡¡total¡¡actual¡¡work¡¡done¡¡is¡¡not¡¡clearly¡¡shown¡¡by¡¡the¡¡documents£»¡¡but¡¡it¡¡is¡¡evident¡¡that¡¡the¡¡measure¡¡of¡¡success¡¡achieved¡¡was¡¡not¡¡equaled¡¡elsewhere¡¡on¡¡similar¡¡improvements¡¡on¡¡a¡¡large¡¡scale¡£¡¡From¡¡1796¡¡to¡¡1804¡¡the¡¡tolls¡¡received¡¡at¡¡Rome¡¡amounted¡¡to¡¡over¡¡fifteen¡¡thousand¡¡dollars£»¡¡and¡¡at¡¡Little¡¡Falls¡¡to¡¡over¡¡fifty¡­eight¡¡thousand¡¡dollarsa¡¡sum¡¡which¡¡exceeded¡¡the¡¡original¡¡cost¡¡of¡¡construction¡£¡¡Dividends¡¡had¡¡crept¡¡up¡¡from¡¡three¡¡per¡¡cent¡¡in¡¡1798¡¡to¡¡five¡¡and¡¡a¡¡half¡¡per¡¡cent¡¡in¡¡1817£»¡¡the¡¡year¡¡in¡¡which¡¡work¡¡was¡¡begun¡¡on¡¡the¡¡Erie¡¡Canal¡£

No¡¡struggle¡¡for¡¡the¡¡mastery¡¡of¡¡an¡¡American¡¡river¡¡matches¡¡in¡¡certain¡¡respects¡¡the¡¡effort¡¡of¡¡the¡¡Lehigh¡¡Coal¡¡and¡¡Navigation¡¡Company¡¡to¡¡bridle¡¡the¡¡Lehigh¡¡and¡¡make¡¡it¡¡play¡¡its¡¡part¡¡in¡¡the¡¡commercial¡¡development¡¡of¡¡Pennsylvania¡£¡¡The¡¡failures¡¡and¡¡trials¡¡of¡¡the¡¡promoters¡¡of¡¡this¡¡company¡¡were¡¡no¡¡less¡¡remarkable¡¡than¡¡was¡¡the¡¡great¡¡success¡¡that¡¡eventually¡¡crowned¡¡the¡¡effort¡£¡¡In¡¡1793¡¡the¡¡Lehigh¡¡Coal¡¡Mine¡¡Company¡¡was¡¡organized¡¡and¡¡purchased¡¡some¡¡ten¡¡thousand¡¡acres¡¡in¡¡the¡¡Mauch¡¡Chunk¡¡anthracite¡¡region£»¡¡nine¡¡miles¡¡from¡¡the¡¡Lehigh¡¡River¡£¡¡It¡¡then¡¡appropriated¡¡a¡¡sum¡¡of¡¡money¡¡to¡¡build¡¡a¡¡road¡¡from¡¡the¡¡mines¡¡to¡¡the¡¡river¡¡in¡¡the¡¡expectation¡¡that¡¡the¡¡State¡¡would¡¡improve¡¡the¡¡navigation¡¡of¡¡the¡¡waterway£»¡¡for¡¡which£»¡¡it¡¡has¡¡already¡¡been¡¡noted£»¡¡an¡¡appropriation¡¡had¡¡been¡¡made¡¡in¡¡1791£»¡¡in¡¡accordance¡¡with¡¡the¡¡programme¡¡of¡¡the¡¡Society¡¡for¡¡Promoting¡¡the¡¡Improvement¡¡of¡¡Roads¡¡and¡¡Inland¡¡Navigation¡£¡¡Nothing¡¡was¡¡done£»¡¡however£»¡¡to¡¡improve¡¡the¡¡river£»¡¡and¡¡the¡¡company£»¡¡after¡¡various¡¡attempts¡¡at¡¡shipping¡¡coal¡¡to¡¡Philadelphia£»¡¡gave¡¡up¡¡the¡¡effort¡¡and¡¡allowed¡¡the¡¡property£»¡¡which¡¡was¡¡worth¡¡millions£»¡¡to¡¡lie¡¡idle¡£¡¡In¡¡1807¡¡the¡¡Lehigh¡¡Coal¡¡Mine¡¡Company£»¡¡in¡¡another¡¡effort¡¡to¡¡get¡¡its¡¡wares¡¡before¡¡the¡¡public£»¡¡granted¡¡to¡¡Rowland¡¡and¡¡Butland£»¡¡a¡¡private¡¡firm£»¡¡free¡¡right¡¡to¡¡operate¡¡one¡¡of¡¡its¡¡veins¡¡of¡¡coal£»¡¡but¡¡this¡¡operation¡¡also¡¡resulted¡¡in¡¡failure¡£¡¡In¡¡1813¡¡the¡¡company¡¡made¡¡a¡¡third¡¡attempt¡¡and¡¡granted¡¡to¡¡a¡¡private¡¡concern¡¡a¡¡lease¡¡of¡¡the¡¡entire¡¡property¡¡on¡¡the¡¡condition¡¡that¡¡ten¡¡thousand¡¡bushels¡¡of¡¡coal¡¡should¡¡be¡¡taken¡¡to¡¡market¡¡annually¡£¡¡Difficulties¡¡immediately¡¡made¡¡themselves¡¡apparent¡£¡¡No¡¡contractor¡¡could¡¡be¡¡found¡¡who¡¡would¡¡haul¡¡the¡¡output¡¡to¡¡the¡¡Lehigh¡¡River¡¡for¡¡less¡¡than¡¡four¡¡dollars¡¡a¡¡ton£»¡¡and¡¡the¡¡man¡¡who¡¡accepted¡¡those¡¡terms¡¡lost¡¡money¡£¡¡Of¡¡five¡¡barges¡¡filled¡¡at¡¡Mauch¡¡Chunk¡¡three¡¡went¡¡to¡¡pieces¡¡on¡¡the¡¡way¡¡to¡¡Philadelphia¡£¡¡Although¡¡the¡¡contents¡¡of¡¡the¡¡other¡¡two¡¡sold¡¡for¡¡twenty¡¡dollars¡¡a¡¡ton£»¡¡the¡¡proceeds¡¡failed¡¡to¡¡meet¡¡expenses£»¡¡and¡¡the¡¡operating¡¡company¡¡threw¡¡up¡¡the¡¡lease¡£

But¡¡it¡¡happened¡¡that¡¡White¡¡and¡¡Hazard£»¡¡the¡¡wire¡¡manufacturers¡¡who¡¡purchased¡¡this¡¡Lehigh¡¡coal£»¡¡were¡¡greatly¡¡pleased¡¡with¡¡its¡¡quality¡£¡¡Believing¡¡that¡¡coal¡¡could¡¡be¡¡obtained¡¡more¡¡cheaply¡¡from¡¡Mauch¡¡Chunk¡¡than¡¡from¡¡the¡¡mines¡¡along¡¡the¡¡Schuylkill£»¡¡White£»¡¡Hauto£»¡¡and¡¡Hazard¡¡formed¡¡a¡¡company£»¡¡entered¡¡into¡¡negotiation¡¡with¡¡the¡¡owners¡¡of¡¡the¡¡Lehigh¡¡mines£»¡¡and¡¡obtained¡¡the¡¡lease¡¡of¡¡their¡¡properties¡¡for¡¡a¡¡period¡¡of¡¡twenty¡¡years¡¡at¡¡an¡¡annual¡¡rental¡¡of¡¡one¡¡ear¡¡of¡¡corn¡£¡¡The¡¡company¡¡agreed£»¡¡moreover£»¡¡to¡¡ship¡¡every¡¡year¡¡at¡¡least¡¡forty¡¡thousand¡¡bushels¡¡of¡¡coal¡¡to¡¡Philadelphia¡¡for¡¡its¡¡own¡¡consumption£»¡¡to¡¡prove¡¡the¡¡value¡¡of¡¡the¡¡property¡£

White¡¡and¡¡his¡¡partners¡¡immediately¡¡applied¡¡to¡¡the¡¡Legislature¡¡for¡¡permission¡¡to¡¡improve¡¡the¡¡navigation¡¡of¡¡the¡¡Lehigh£»¡¡stating¡¡the¡¡purpose¡¡of¡¡the¡¡improvement¡¡and¡¡citing¡¡the¡¡fact¡¡that¡¡their¡¡efforts¡¡would¡¡tend¡¡to¡¡serve¡¡as¡¡a¡¡model¡¡for¡¡the¡¡improvement¡¡of¡¡other¡¡Pennsylvania¡¡streams¡£¡¡The¡¡desired¡¡opportunity¡¡¡¨to¡¡ruin¡¡themselves£»¡¨¡¡as¡¡one¡¡member¡¡of¡¡the¡¡Legislature¡¡put¡¡it£»¡¡was¡¡granted¡¡by¡¡an¡¡act¡¡passed¡¡March¡¡20£»¡¡1818¡£¡¡The¡¡various¡¡powers¡¡applied¡¡for£»¡¡and¡¡granted£»¡¡embraced¡¡the¡¡whole¡¡range¡¡of¡¡tried¡¡and¡¡untried¡¡methods¡¡for¡¡securing¡¡¡¨a¡¡navigation¡¡downward¡¡once¡¡in¡¡three¡¡days¡¡for¡¡boats¡¡loaded¡¡with¡¡one¡¡hundred¡¡barrels£»¡¡or¡¡ten¡¡tons¡£¡¨¡¡The¡¡State¡¡kept¡¡its
СÌáʾ£º°´ »Ø³µ [Enter] ¼ü ·µ»ØÊéÄ¿£¬°´ ¡û ¼ü ·µ»ØÉÏÒ»Ò³£¬ °´ ¡ú ¼ü ½øÈëÏÂÒ»Ò³¡£ ÔÞһϠÌí¼ÓÊéÇ©¼ÓÈëÊé¼Ü