Catalogue of Specimens. 



663 



609 Quartzose Conglomerate (bowlder.) cement mica slate 



610 do do do 



611 Quartz with disseminated iron pyrites, 



612 do ferruginous, bowlder, Worthington. 



613 do passing into yellow jasper, Chesterfield. 



Mica Slate. 



614 



Mica Slate, common, quartz laminar, mica scaly shining, Colrain. 



615 



do do do 





do Peru. 



616 



do do do 





do Blanford. 



617 



do do do 





do Smithfield. R. I. 



613 



do do do 





do Shelburne. 



619 



do do do 





do Florida. 



620 



do do do 





do Framingharn. 



621 



do do do 





do Cheshire. 



622, 



623 do of a fibrous aspect, 





Northfield. 



624 



do do do 





do West Stockbridge. 



625 



do very even and shining 





do Bolton, Ct. 



626 



do layers tortuous, qu artz tuberculous 



h 



Stockbridge. 



627 



do do feldspar and quartz tuber, passing to gneiss, Pittsfield. 



628 



do with feldspar passing to gneiss, mica shining, Colrain. 



629 



do do do 



do 



Westfield. 



630 



do do do 



do 



Leverett. 



631 



do do do 



do 



Montague. 



632 



do do do 



do 



Granvalle. 



633 



do do do 



do 



do 



634 



do do do 



do 



Florida. 



635 



do do do 



do 



Ware. 



636 



do do do 



do 



Wachusett, Princeton. 



637 



Talco-micaceous Slate, 





Enfield. 



638 



do 





Saddle Monutain. 



639 



do 





Florida. 



640 



do 





West Stockbridge. 



641 



do 





Saddle Mountain. 



642 



Mica Slate amphibolic and garnetiferous, 





Norwich. 



643 



do do do with phosphate of lime, Conway. 



644 



do do do 





Colrain. 



645 



do garnet iferou s, 





Chesterfield. 



646 



do staurotidiferous 





do 



647 



do spangled, 





Goshen. 



648 



do do 





Plainfield. 



649 



do do rhomboidal, 





do 



650 



do do 





Norwich. 



651 



Argillo-micaceous Slate, 





Goshen. 



652 



do with seams transverse to the layers, Greenfield. 



653 



do rhomboidal, 





do 



654 



do 





Charlemont. 



655 



do 





Hawley. 



656 



do 





Heath. 



657 



do 





Lanesborough. 



658 



do glazed, with quartz, 





Glen, Leyden. 



659 



do do contorted, 





Guilford Vt. 



660 



do 





Hancock. 



661 



do with undulating surface, 





Bradford. 



662 



do contorted with layers of quartz, 



Guilford Vt. 



663 



do • do 





Whately. 



664 



do do 





Guilford Vt. 



665 



do 





Bernardston. 



Windsor, 

 Adams. 

 Windsor. 



