524 



Annates of the Carnegie ^Museum. 



Monotrypclla sp. r, Cainarota'cliia plena a. 



Hebertella vulgaris a, 



D,.j. Covered. 5 feet 6 inches = 148 feet 10 inches. 



I),^. Same as 1),, but the fossils are usually crushed. 



2 feet 3 inches =151 feet i inch. 



Monotrypclla sp. r, Camarota'chia plena a, 



Hebertella vulgaris c, Isoteliis sp. r. 



Djg. Mostly covered. About one foot of the same material as D,^ is 

 exposed. 6 feet 3 inches = 157 feet 4 inches. 



Herbertella viib^aris c, Camarota'chia plena c, 



Cafiierella 7'arians r, Isotelus sp. r, 



Camerella loni^iroxtris r, Pterygonictopus anniilatiis r. 



D,g. Light-gray, thin-bedded, fine-grained limestone. Much jointed. 



6 feet = 163 feet 4 inches. 



Malocystitcs sp. r, 

 Phylloporina incepta c, 

 Monotrypclla sp. a, 

 Hebertella vulgaris c, 

 Kafinesquina altcr/ia/a r, 

 Camerella l<>ngirostris r, 



Camarota'chia plena a, 

 Bucania sulcatina r, 

 Isotelus harrisi r, 

 Ilhoius globosus c, 

 Asaphus alpha r, 

 Eurvchilina latimarginata r. 



D,.. Covered to the next point east. 69 feet = 232 feet 4 inches. 



Djj,. Light-gray, compact, coarse-grained limestone, in layers six to 



eight inches thick. 9 feet 8 inches = 242 feet. 



Phylloporina incepta r, 

 Hebertella sp. r, 

 Rafinesijuina altcrnala r, 

 Camerella longirostris r, 

 Camarota'chia plena aa, 



Modiolopsis fabafonnis c, 

 Ciionychia montrealensis r, 

 Isotelus s]). r, 

 Leperditia canadensis c. 



D,y. Unevenly bedded, impure, coarse-grained limestone. 



3 feet 2 inches = 245 feet 2 inches. 



Alonotrvpclla sp. r, Isotelus obtusum c. 



Camarota'chia plena a, 



Djy. Fine-grained, light-gray, crystalline limestone, made uj) of 

 broken shells. 4 feet = 249 feet 2 inches. 



