568 



Report of the State Geologist. 



2. Tolerably fine limestone, filled with fragments of crinoids, con- 



taining Orthis and Strophorn^na 20 ft. 



3. Measures concealed, 40 " 



4. Impure limestone, filled at bottom with Orthis, thin-bedded when 



long exposed to weather, the upper six feet abounding in 

 crinoidal fragments, 30 " 



5. Fine-grained, massive limestone containing Scalites angulaims, 



RapMstoma and fragments of trilobites 25 " 



6. Impure limestone abounding in Orthis, 10 " 



7. Measures concealed, 25 " 



8. Massive grey limestone, largely made up of crinoidal remains, 



having red spots in a stratum about ten feet from the top ; 

 abounding with gasteropoda near the middle, 50 " 



310 ft. 



Group B. 



1. Thick-bedded, nodular, dark-colored limestone, containing 



Maclurea magna, . ■ . . . 50 ft. 



2. Massive, pure limestone, grey, fine-grained, often oolitic, abounding 



in crinoidal remains and Stenopora fibrosa, 20 " 



3. Massive, bluish-black, tolerably pure, nodular limestone, 



containing Machirea dkkjiki and masses of black chert, ... 45 " 



4. Similar to No. .">, but containing in addition to Maclwrea, various 



species of Orthoceras and large masses of Stromatooerium, . . 90 " 



5. Less massive limestones, quite impure, and often disintegrating 



into nodules as though shaly, 60 " 



265 ft. 



Group C. 



1. Dark, iron-grey dolomite, weathering yellowish, ....... 1 ft. 



2. Blue, compact, fine-grained, pure limestone, containing fine lines 



of calcite, 6 " 



.">. Dove-colored, compact, brittle, perfectly pure limestone, contain- 

 ing small nodules of calcite, 5 " 



4. Iron-grey dolomite, 3^" 



5. Like No. .'), only containing larger calcite nodules, 4i" 



I). Dark-grey, fine grained, compact limestone, somewhat impure, 



having a mottled aspect when weathered, containing undeter- 

 mined species of Mw'chisoma and Orthoceras, 2 " 



