Protrusions of Granite. 



475 



south part of Con way.* At a, the slate runs north and south and 

 dips east : at b, it dips south : at c, west ; and at d, southeast. The 

 sketch embraces an extent of only a few square rods. 



(1) Junction of Granite and M. Slate ; Conway. 



No. 2. exhibits a similar case near the village of Blanford, close 

 by the road to Granville. The mica slate here runs nearly north and 

 south, and dips 80 west : except at the end of the mass of granite, 

 where the dip is nearly north, about 70 or 80. 



(2) Junction of Granite and M. Slate ; Blanford. 



The following case I noticed in the west part of Leominster ; where 

 the numerous veins and masses of granite in the mica slate, and the 

 great confusion obvious in the latter, made me desirous to spend more 

 time in examining the surrounding region than I was able to do. 



* In all the following cases the uncolored part of the sketch represents gran- 

 ite ; except that in a few cases (ex. gr. No. 9.) irregular lines arc drawn to rep- 

 resent the irregular divisions of granite, 



