TRANSACTIONS OF THE SECTIONS. 61 



evidence given of the age oi '^ne nuim Hougliton, the late State Geo- 



f'^Tf SSirvn L^re'Sh' the" loVeSrln A^^dSn f^ssiliferous deposits ; 



nart of tCNerBrunswick coal measures reaches Canada, but there comes out from 

 part ot the ^"^^^ 5*;"" , ^^^ of the Bay Chaleur, 3000 feet of carboniferous red 

 beneath it, on the Canada siae oi ^"« Lcceeded by 7000 feet of Devonian sand- 

 sandstones and conglomerates. These jre su^c ^d^^^^^^^^^ ^^^^.^,. „f Un^estones 

 stones, which rest upon 2^^^^^ has been traced a distance of about 



and slates. The base ot ^'^^h'PPf'^,^" .%, Lawrence, first to Memphramagog Lake 

 yoo miles from ^aspe on *e Gulf^of SL^^^^^ P^^ ^J^^^^ .^^^ 



Ma^'sL^cwt^Sepinf ; ts "ictp aTavaTiable distance from the coal In the 



rorc'onVeSg'thHrrghs oS'the\"nUclinal, in the valley of Lake Champlain, is 



*%S°nVrttesTe;n side of the western area the formations are in a general flat 

 an? quiescent coSion from Lake Superior to Pennsylvania and they succeed one 

 anotheiwithout any observed want of conformity, from the base of the Lower Silu- 

 rian to thTsummit of the carboniferous. But it has been shown by Professors Rogers 

 Jhat proceeZ^from north-west to south-east there occurs in this state a set of 

 successive paraflel undulations which increase in intensity in the direction men loned, 

 Todrn the'south-east side of the Apalachian coal-field --^^S^wrth^e e pfi al 

 duce overturn dips in all the formations together, the coal nclusiye. Ihese plica- 

 tirsS their overturn dips thus form the south-eastern rim ot the western area, 

 and a7edisi?nctlv traceable bv the Apalachian chain through Vermont into Canada, 

 anrtLusrCanada to the' Gulf of St. Lawrence; in this part constituting the 

 ^orth westSn rim o? the eastern area. But while in the western division there ,s 

 no wait of conformity from the Lower Silurian rocks to the carboniferous, and the 

 «hcItions there appeir to be of a date subsequent to the carboniferous deposit, in 

 tl^l eastern there a?e evidences of a want of conformity between the Upper and Lower 

 SiL^SrmSUndt 



thev are in parallel directions w th those in the latter. There is another ana a gi eater 

 want of ?oEformiy between the Devonian rocks and the carboniferous. A large 

 por'bn of f^TaXnkrous deposit of New Brunswick .how3 but very moderate 



