NEW YORK STATE MUSEUM 



^kw^ifi nevertheless the general direction of these ancient streams 

 can be indicated with a fair approach to accuracy. Davis 1 has 

 XiHfll&IIMl some of the probable drainage lines of this early period 

 $fk$ tileCiVnnsvlvania region and his assumptions may be regarded 

 ^Texjgfef&fing the conditions of that time as accurately as the 

 }ffe«eM'teVnTence will permit. After the formation of the Appa- 

 ra^Uaftt^Jldsb then much more pronounced than now. the syn- 

 clinal valleys we re occupied by longitudinal consequent streams. 

 Aj%sHTdraIuaiHio lakes filling the lower basin-shaped depressions 



ee«_Ji]£_-ri4ges. Some of these were drained northwestward 



by the master stream of the region which Davis has named the 

 A^^hr^crt^ '.rfv^i' which he locates not far from the present 

 Susquehanna. This river joined the ancient Ohio, which then as 

 'now TfMlnfVr^^sV^W^ to the Mississippi gulf. Other small 

 streams flowed from the northwestern faces of the " Nittany high- 



and likewise became tributary 



¥o ^ ti ^ lg6niS? flef)^I0 ^ lm, '• , 9 * ^ 



' si V : 're¥{ur^^ the drainage development 



e 5mair|^Mteo^ entirely changed the normal 



es^n^art of this area, was the folding 



of the strata into the Appalachian anticlines and synclines which 

 Rjukj place - during late P ermian Tim e, and the magnitude and 



remnants found at present in the folded district. From the west 



ebnaJxo bad ilono io noij-jotf -loqrfJ .x no qitlisvo rfi>i 



ernmost slopes of thes^iJmifi)mT[^tPrife,' , ' r t>he drainage flowed north 

 westward, but the drainage 1 of the other slopes was carried along 

 W ^i 1 ^mr^m^§^M i M^t%^or was deprived of this 



achian continent to 



'VdV 3&uthl&H#. 7 iff^M«§a%e(ItS^sl&ea1n¥» flowing northwest 

 tfflmWW** 1 ne^^te^ffieft^ota^S^ga HveVennuch smaller than 

 ^>s^¥oihi>i<^^^ to carry 



^^ti(niuiuigio^)l) )^Tlia>i>g^!p;irrt -oft); H fox J <DBQfttfl$,dBdid land into the 

 . Mississippi; foBArroinemtij b&B be rnsiintbltJieilmwfoifi'in the north- 

 .fta$ta±fctroBegji)B teswrl eHJtvgnfcbenbiiBudHianoBd tpgonbnnced, even 



ania. Nat. 



Geog. Mag. v. 1, no. 3. 



