THE LIMESTONE YIELDS CAMBRIAN FOSSILS. 335 



mile and a quarter north of Rutland, near the banks of East creek, and 

 about three hundred feet, measured across strata, above the quartzite. The 

 locality is on the Proctor estate, back of the barn. The fossils were found 

 in a fine-grained white limestone, in a layer two or three feet thick, and could 

 be detected for about twenty-five feet along the line of strike. 



Dr. Foerste subsequently found similar fragments some hundreds of 

 yards southeast of this locality ; and a quarter of a mile southwest of this 

 second locality, and almost on the line of strike, on the western side of a hill 

 quarried for building stone, a third was discovered. The latter localities 

 both lie in the rectangle formed by Grove street, Field avenue, and Main 

 street, two-thirds of a mile north of the depot in Rutland. At the third 

 place, numerous perfect specimens were found of a Salterella, closely resem- 

 bling or identical with the Salterella curvatus of the Olenellus Cambrian of 

 North Attleboro', Massachusetts. This is some thousand feet of strata, more 

 or less, above the quartzite of Pine hill. 



Subsequently the writer found fragments of the Kutorgina at two other 

 localities : one nearly in the center of the valley, about two miles north of 

 Rutland, four hundred yards east of the main Pittsford road, and one hun- 

 dred yards south of a branch road to Mendon ; the other about two miles 

 northeast of Rutland, on the main road to Mendon, just through the fence 

 bordering the road and near the eastern edge of the valley. 



The quartzite of Pine hill underlying this limestone forms the eastern 

 slope and part of the crest of the hill. It is a massive, vitreous variety, with 

 frequent thin beds of black schist, and dips gently eastward. This passes, 

 on top of the ridge, into a variable series composed of micaceous quartzite, 

 metamorphic conglomerate, cement rock, one small bed of crystalline lime- 

 stone, and some beds of gneiss, which is the exact counterpart of the similar 

 series belonging with the Olenellus quartzite lying east of the limestone. 

 This series has a general easterly dip, although highly contorted. It is suc- 

 ceeded by the band of black schist with numerous lenticular quartz layers, 

 the cleavage of which dips rather steeply eastward, though the stratification 

 planes are irregularly crumpled. This lies on the limestone of the Centre 

 Rutland belt in apparent conformity, dipping at the contact from 30° to 60° 

 eastward. 



The limestone of this belt is very irregular in dip, which varies from steep 

 eastward to westward. Owing to the apparent conformity of the series and 

 the stratigraphical position of the Pine hill quartzite underlying the Rutland 

 limestone and continuous with the eastern quartzite, Pine hill appeared to 

 be an overturned anticlinal, and the Centre Rutland limestone, therefore, 

 the equivalent in part of the Rutland limestone. No fossils, however, were 

 found in this limestone on the line of section ; but on the continuation of the 

 belt south of the railroad Dr. Foerste found three fossil localities. 



