A. Wing's Discoveries in Vermont Geohgy. 339 



gray limestone of the western border of the valley was also found 

 to be abundantly fossiliferous. That of the eastern border, just 

 east of the marble quarries we examined, but in the short time 

 there, no distinct fossil forms were found. 



Mr. Wing in his notes explains the position of the Chazy 

 belts in the limestone, and that of the slates either side by the 

 view that the slates lie in synclinals 3# 



and the limestone in an abraded 

 anticlinal, as illustrated in the an- 

 nexed figure, making the slates / / 

 younger than the Chazy. He ob- I \ 

 serves that he had suspected the \ \ 

 existence of the Trenton outside 

 of the Chazy between the fossil- 

 iferous beds and the slates, but 

 that he had found no evidence of 

 it, and, moreover, the "space was too thin for the normal Tren- 



If there is here but one anticlinal, there are two fossiliferous 

 levels in the limestone of the valley, and all the limestone is 

 Chazy; but if a double anticlinal exists, as is possible, though 

 perhaps not probable, then the marble belts may belong to a 

 stratum below the Chazy. 



About three miles southwest of West Rutland, in the town of 

 Ira, and within the "great central belt of slates" there are, 

 according to the Vermont Geological Report (p. 432), two out- 

 crops of limestone which afford fossils, and deserve to be called 

 fossiliferous ; the fossils found were Encrinal disks, and shells re- 

 sembling a Euomphalus in form. Whether related to those of the 

 West Rutland Valley or not cannot be made out from the facts 

 stated. 



3. Sudbury Limestone. 



The Sudbury limestone belt is situated a little over twenty 

 miles north-northeast of West Rutland, on the west side of the 

 "great central belt of slate." The limestone lies between the 

 great band of slate and another on the west, and has a width 

 of two to three miles. The area is bounded both to the north 

 and south by slate, the western slate belt, which leaves the 

 great belt in Benson, joining it again twelve or fitt- 

 north, the rock for two miles south of the village of Whiting 

 being slate. Thus the area is isolated like that of West Rut- 

 Jand, and both may be said to be contained within the slate 

 belt. Still, there is a break or interruption in the eastern slate 

 belt toward Whiting, and through it the Sudbury limestone 

 connects directly, or is continuous, with that of Otter Creek 

 valley. 



