338 BREACHES IN THE INNER 



7. The breach made by the waters of the river Schuyl- 

 kill. 



The two branches of the river Schtiylkill have effected 

 a similar disruption through the same chain, there deno- 

 minated the Albany mountains. 



It appears by the report of Cadwallader Evans, jun. 

 President of >the Schuylkill Navigation Company, made 

 in 1817, that the whole fall in the river from the coal 

 mines above the Blue ridge to tide water near Philadel- 

 phia, is about four hundred and eighty feet. Of this the 

 ascent from tide water to Reading is ninety-eight feet ; 

 and to the coal beds beyond the mountains three hundred 

 and eighty-two feet. The specimens of coal, and the to- 

 pography of the country, by Charles Snowden, Esq. are 

 very characteristic and instructive. 



It is represented that the tipper stream of the Swetara 

 has in like manner penetrated the barrier. 



8. The breach made by the Susquehannah. 



Some distance to the southward of the junction of the 

 Juniata river, the forceful Susquehannah, fraught with the 

 rains not only of fehe midland district of Pennsylvania, 

 but of a very extensive region in New- York, has tri- 

 umphed over the mountain barrier, there termed the 

 north mountain, which impeded its course to Chesapeake 

 Bay. When geognostic researches shall be pushed as far 

 as they deserve, the scientific world will be fully and 

 circumstantially informed of the natural and physical 

 appearances at this memorable spot. 



Water drained from the higher region, and comminuted 



o 



