Metamorphic Upper Devonian Rocks. 365 



able from the feldspathic quartzite occurring east of the West 

 jSTorthfield series and described below. 



The Vernon limestone. — On the Lily Pond road above 

 mentioned and just east of E. G. Scott's house occurs a band 

 of limestone. It is a coarse granular limestone, highly crys- 

 talline, of light color, containing some garnet, hornblende and 

 green mica. It contains what seem to be distinct traces of corals 

 and crinoids and in everyway closely resembles the Bernardston 

 bed with which I identify it without hesitation. Especially do 

 the weathered surfaces show a peculiar conglomerate-like struc- 

 ture common at Bernardston. Large rounded fragments of a 

 fine grained white limestone are cemented by a coarser and more 

 highly crystalline limestone, the latter in large amount, as if the 

 rock had been brecciated by pressure and then the fragments 

 rounded by percolating waters and re-cemented. This bed is ex- 

 posed about 30 rods and may have a thickness of as many feet, 

 but its boundaries are not well exposed. Toward the west it 

 graduates on the strike into a calcareous hornblende schist, and 

 above that, to the south, through an actinolitic quartzite into 

 a quartzite abounding in large garnets and blotches of a greenish 

 mica, while below it is succeeded by very coarse hornblende 

 schist in large force. The whole series is enclosed in the 

 gneissoid quartzite. 



Description of the range from Bernardston to South Ver- 

 non. — Directly opposite the Williams farm and 200 rods dis- 

 tant, on the east side of Eall River, begins a range of low hills, 

 which runs , northeast between the two towns named above. 

 This range of hills is backed on the northwest by a much higher 

 range of argillite hills — Bald Mountain, Pond Mountain — and 

 bounded on the southeast by the high terrace sands through 

 which one large area and many smaller islands, of the rocks of 

 the Bernardston series, emerge. I have called this the West 

 J^orthfield range, from the town in which it for the most part 

 lies. The road running along the east side of Fall River skirts 

 the range at its western end, and the main road from Bernards- 

 ton to South Yernon borders it on the south and east, while the 

 roads which branch from the latter and cross the range are 

 named from some resident upon each, as given in Beers' atlas, 

 and as marked on the map on page 264. 



The mapping of this area was difficult both because the rocks 

 are thrown into great confusion, many beds being in places 

 echeloned, so that the local strike regularly disagreed with the 

 general run of the bands, and because of the presence of several 

 large drumlins which effectually conceal the underlying rock. 

 The intervening areas are, however, so entirely free from drift, 

 up to the very foot of these hills, that, were it not heavily 

 wooded, the region would furnish abundant outcrops, and, as 



