6o 



ROCHESTER ACADEMY OF SCIENCE. 



[Jan. II, 



NO. OF 

 SAMPLE, 

 46. 



47.(?) 

 48. (>) 



49- 



896'. 

 912'. 

 929'. 



^o. 



945 



DESCRIPTION OF 

 , DEPTH. SAMPLE. 



879'. About the same as No. 44, with a few 

 brownish-red chips. 



Ditto. 



Bluish- gray and somewhat arenaceous. 



Bluish-gray and light gray, somewhat 

 arenaceous chips. The light gray are 

 calcareous. 



Olive, argillaceous shale, some of the 

 chips micaceous and somewhat arena- 

 ceous, a few slightly purplish. 



Olive to greenish-gray, argillaceous shale, 

 slightly micaceous and arenaceous. 



Olive to bluish-gray, argillaceous shale, 

 a few slightly purplish chips. 



Bluish-gray and light gray calcareous 

 chips. 



Greenish-gray, finely arenaceous sand- 

 stone (?). 



Ditto. 



Ditto, only slightly more calcareous. 



Darker gray sandstone, with some olive, 

 argillaceous shale. (2d sand of Mr. 

 Hatch.) 



Ditto, mixed with bluish shale. 



Gray, fine grained sandstone mixed with 

 bluish shale. 



Gray sandstone and shale mixed. 



Greenish-gray shale (?) with fragments of 

 fossils. 



Olive, argillaceous shale, slightly aren- 

 aceous. 



Mostly dark to slightly brownish-gray 

 chips, some olive shale. 



Olive, argillaceous shale. 



Olive, slightly arenaceous chips. 



Dark gray shale with some light gray, 

 finely arenaceous sandstone (?). 



Mainly greenish-gray, argillaceous shale. 



Ditto. 



Ditto. 



THICKNESS 

 OF STRATA- 



165' mainly 



olive to 



bluish-gray 



argillaceous 



shale. 



49' greenish- 

 gray sand- 

 stone (?). 



60' gray 

 sandstone. 



135' mostly 



olive and 



gray shale. 



