74 



835 



850 



855 



875 



88i 



890 

 900 



906 



930 



950 



965 

 980 



1000 



lOIO 



1015 



1025 



1035 



'045 

 1050 



1060 



1075 

 1080 

 1085 

 mo 



1115 



1120 



"35 



1 140 



1150 

 1 164 



i'73 

 11S4 



Cincinnati Society of Natural History 



White crystalline limestone fragment. 



Same, finely ground up, with pieces 

 of darker grain, friable. Mag- 

 nesian. 



Same, very friable — iragments lar- 

 ger — no fossils. 



Same, with pieces of greenish shale. 

 Magnesian. 



Same, harder. 5 feet drilled in 4 

 hours. 



Same, finely groimd up — little shale. 



Same, friable — pieces almost tal- 

 cose — finely ground up. Mag- 

 nesian. 



Slighdy darker; fragments iron py- 

 rites. Magnesian. 



Lighter color. 



Same as above. Magnesian. 

 " as 930. 



Almost white. 



A little darker than above. 



Same as 1000. 



" " Magnesian. 



Nearly white. 

 A little darker. 



Same as 1060. Magnesian. 



(. I. (.i 



" " Finely ground. 



'' " Three small pieces. 



Crystalline. Magnesian. 

 Darker, much larger fragments. 



More Magnesian. 

 Same as 11 15. 



" " but pieces smaller. 



Much lighter color, smaller pieces. 



Magnesia and Alumina. 

 Dark— hard—finely ground. 

 " " pieces larger. Mag- 



nesia and Alumina. 

 Lighter than above. 

 Same as 11 73. 



White Magne- 



nesian 



Limestone. 



Birdseye (?) 



Limestone. 



Trenton Mag- 

 nesian (Birds- 

 eye Lime- 

 stone.) 



