BEENARDSTON SERIES OF UPPER DEVONIAN. 



263 



torted argillite extends northerly. Eastward, a di'umlin conceals its contact 

 with the newer rock. It is probably a conformable contact of the argillite 

 and the quartzite, as I have found it so everywhere in the region. 



The western outcrop of the mica-schist (!'). — Wliere the series outcrops for 

 the first time after crossing the di'umlin a small area of the mica-schist of 

 this series has recently come to my notice. It is a garnetiferous mica-schist, 



argillite:— - 



Outcrops marked with darker shade. 



Fio. 15. — Map of Devonian rocks on the Williams farm. 



like the more eastern outcrops, and it lies plainly in a small syncline of the 

 quartzite 10 rods south of the western end of a row of great chestnuts 

 which crown the hill. 



The ivestern exposures of the quartzite {2'). — The discover}- of the schist 

 just described makes plain the structure of these quartzite outcrops with 

 their western dip. As the schist is in a small spicline, the quartzite makes a 

 corresponding anticline on the east of this outcrop of the mica-scliist. The 



