1512 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Beloit dolomite, Black River, Wisconsin, 

 etc. 



Benson limestone, Trenton, Kentucky. 



Berkshire schist, Ordovician(?), Con- 

 necticut. 



Bertie waterlime, Upper Cayugan, Can- 

 ada and New York. 



Bertram beds, Silurian, Iowa. 



Bib dolomite, Ozarkian, Alabama. 



Big Buffalo series, Lower Ordovician. 



Bigby limestone, Trenton, Tennessee, 

 Kentucky, and Virginia. 



Big Fork chert, Trenton, Arkansas. 



Big Horn dolomite, Black River and 

 Richmond, Wyoming. 



Binnewater sandstone, Cayugan, New 

 York. 



Birch Creek schist, Pre-Ordovician, 

 Alaska. 



Bird Mountain grit, Ordovician, Vermont. 



Birdseye limestone (=Lowville) Black 

 River, New York, etc. 



Black River group, Lower Mohawkian. 



Blakeley sandstone (=St. Peter), Big 

 Buffalo Series, Arkansas. 



Blanchester division (of Waynesville) 

 Richmond, Ohio Valley. 



Blaylock sandstone, Upper Medinan, Ar- 

 kansas. 



Bledsoe limestone (= Louisville), Upper 

 Niagaran, Tennessee. 



Bloomsburg red sandstone, Upper Cayu- 

 gan, Pennsylvania, Maryland, etc. 



Blount group, Upper Chazyan. 



Bluff limestone, Mohawkian, Wisconsin. 



Bob formation, Upper Niagaran, West 

 Tennessee. 



Bolin Creek sandstone member of Eliza- 

 beth formation (==Roubidoux), Cana- 

 dian, Missouri. 



Bossardville limestone, Upper Cayugan, 

 New York and New Jersey. 



Bowling Green dolomite, Upper Medinan, 

 Missouri, etc. 



Bradford schist, Ordovician, Vermont. 



Brainard shales, Upper Medinan, Iowa. 



Brannon division of Flanagan, Trenton, 

 Kentucky. 



Brassfield limestone, Upper Medinan, 

 Ohio Valley, etc. 



Brayman shales, Cayugan, New York. 



Bretonian, Canadian, Nova Scotia. 



Briarfield dolomite, Upper Cambrian or 

 Ozarkian, Alabama. 



Bridgeport sandstone, Silurian, Pennsyl- 

 vania. 



Brimfield schist, Silurian?, Massachusetts. 



Bromide formation, Black River, Okla- 

 homa. 



Bromley shale of Cynthiana, Trenton, 

 Kentucky, etc. 



Brown's Mountain group, Lower Ordo- 

 vician, Nova Scotia. 



Brownsport bed, Niagaran, West Ten- 

 nessee. 



Bryant limestone, Black River, Missouri. 



Buff limestone. See Upper Buff and 

 Lower Buff. 



Buffalo shales, Richmond, Iowa. 



Bullhead dolomite (= Akron), LTpper 

 Cayugan, New York, etc. 



Burden conglomerate, Middle Ordovician, 

 New York. 



Burgen sandstone, Lower Ordovician, 

 Oklahoma. 



Byron beds, Niagaran, Wisconsin. 



Cabot Head beds, Upper Medinan, Onta- 

 rio. 



Cacapon sandstone, Lower Niagaran, 

 West Virginia, etc. 



Caddo shale, Lower Ordovician, Arkan- 

 sas. 



Calciferous limestone (=Beekniantown) 

 Canadian, New York, etc. 



Camillua shale, Lower Cayugan, New 

 York. 



Camp Nelson limestone, Stones River, 

 Kentucky. 



Canaan dolomite, Ordovician (?), Massa- 

 chusetts. 



Canajoharie shale, Trenton, New York. 



Cannon limestone, Trenton, Tennessee. 



Cap-au-Gres sandstone (=St. Peter), Big 

 Buffalo series, Missouri. 



Cape Canon massive, Ordovician, Quebec. 



Cape G irardeau limestone. See Girardeau. 



Capitol limestone (=Bigby), Trenton, 

 Tennessee. 



Cardiff quartzite, Ordovician (?), Mary- 

 land. 



Carters Creek limestone (=Lowville), 

 Black River, Tennessee. 



Carters limestone. See Carters Creek 

 limestone. 



Cason shale, Richmond, Arkansas. 



Cassin formation (=di vision E and upper 

 part of D of Beekmantown), Canadian, 

 Vermont and New York. 



