EOOKS. 19 



3. BLACK-RIVER LIMESTONE GROUP, 



INCLUDING THE CHAZY, BIRDSEYE AND BLACK-RIVER LIMESTONES. 



FIFTH TABLE CASE. 

 Names. Localities. 



1 & 2 Chazy limestone (lower layers). Chazy, Clinton, 

 (encrinal layers). Chazy, Clinton, 

 (encrinal mass). Chaay, Clinton, 

 (encrinal layer with discs and plates). Chazy. 

 (with fossil shells). Chazy. 

 (oolitic). Chaay. 

 (oolitic). Big island, Oriange. 

 (compact). Mount Lookout, Orange. 



10 Polished sukface of the Encrinal layer. Chazy, Clinton. 



11 & 12 Chazy limestone (with Madurea magna). Chazy. 

 13 & 14 do (with fragments of fossils). Chazy. 



15 do (two specimens, with fragments of shells). Chazy. 



16 do (two, with Madurea and Eaphistoma). Chazy. 



17 do (with Atrypa and crinoidal columns). Chazy. 



18 BiRDSEYE LIMESTONE (wlth Orthoceras and Phylopsis). Great bend 



of the Black river. 



(with fossils). Creek near Spraker's basin. 



(with fragments of trilobites). Watertown, Jefferson. 



(with obscure fossils). Sugar river near Boonville. 



(with Phytopsis cellulosum). Near Watertown. 



(with Phytopsis tubulosum). Fortplain. 



(with P. tubulosum). Near Boonville, Lewis. 



Fortplain, Montgomery. 



(polished surface, exhibiting transverse sections of 

 P. tubulosum). Fortplain; 



Near Boonville, Lewis. 



(with Phytopsis). Near Boonville, Lewis. 



(with Phytopsis). Near Amsterdam, Fulton. 



