in the vicinity of Great Barrington, Mass. 277 
One will be struck with the fact that all these fossils have an 
Upper Silurian or Devonian character, wherever they are of value 
in identifying strata. * * * * 
We incline to the opinion that they must probably be placed 
as high as that formation, or as low as the Lower ilurian; to 
which last position Mr. T. 8S. Hunt assigns them. 
_ With regard to the Vermont quartzite, we have the follow- 
inz facts from page 356, of the same report. 
Several species of fossils occur in the quartz rock. They are a 
species of ZLingula, a mollusk resembling the Modiolopsis, a 
straight chambered shell (?), a few crinoidal columns, the Scolithus 
linearis (Hall), a few fucoids, and some indeterminable forms 
which are evidently organic. 
ingula is from the north part of the principal range of 
From the above statements it would appear that the lime- 
stone is either later Lower Silurian, or younger. But species 
inferred by Hall, Billings, Hunt and others that the beds are 
probably Lower Silurian. The encrinal stems, as I learned 
having followed that of the Chazy, as in most regions of Chazy 
Hudson River group; and the Scolithus is of no particular age. 
The results thus take us back to the old idea of the Profes- 
sors Rogers, that the limestone is mainly Trenton, and therefore 
that the slates of the Taconic Range are of the Hudson River group. 
‘he two make up the true original Taconic system of Emmons. 
Before leaving this topic I make one remark i 
ture, Through the early part of the oon controversy—im 
i em 
