190 GEOLOGY OF OLD HAMPSHIRE COUNTY, MASS. 



and resembles the Heath band in the Goshen schist. As it crosses Shelburne 

 and Conway it resembles the Shellnn-ne Falls and East Charlemont band, 

 though lacking the abundance of pyrite in the latter (see PL VI, fig. 2). 



THE WHATELY BED. 



The other and more important band of amphibolite comes out from 

 beneath the sands of the valley in Whately with a width greater than that 

 of the former Ijand at its widest, and runs with increasing width southwest 

 across this town and into Williamsburg, to abut against the great block of 

 granite in that town. 



In massing the evidence for the batholitic character of this granite I 

 have, on page 310, mentioned the series of isolated patches of the schist 

 found for many miles as inclusions in the granite along an area extending 

 southwest in the line of strike of the bed across Roberts and Sawmill hills, 

 in the north part of Northampton, and parallel with the similar inclusions of 

 limestone and mica-schist. Several of these are marked on the map. It is 

 very singular that if the line of this series of inclusions of the hornblende- 

 schist be continued south still farther it would cross the site of the Loud- 

 viUe lead mine. This gives a curious interest to the following extract : 



Serpentine occurs at 723 feet from the entrance of tbe adit at Loudville (South- 

 ampton), containing very red quartz embedded in various directions. It is very com- 

 pact and mostly green. Here it is but 3 feet thick. About 670 feet is beautiful green 

 soapstone.' 



There are, so far as I know, no specimens extant of the rocks men- 

 tioned, and the adit has been closed many years. 



The fact that the hornblendic rock here discussed shows elsewhere no 

 tendency to change to serpentine or talc lessens the probability that they 

 are the same, and I have been disposed to refer this occuiTence to the older 

 serpentine connected with the Chester amphibolite. 



THE WIIITMORES FERRY BED. 



Far out in the middle of the Triassic area, where the western foot of 

 Mount Toby meets the Connecticut River, is a remarkable outcrop of 

 amphibolite and whetstone-schist, projecting through the Mount Toby con- 

 glomerate in a most unexpected way. The proofs of the identity of the 

 amphibolite with the Whately bed are given in the petrogi'aphical descrip- 



' Amos Eaton: Am. Jonr. Sci., Ist series, Vol. I, 1818, p. 137. 



