ROCHESTER ACADEMY OF SCIENCE. 



[Jan. 



NO. OF 

 SAMPLE. DEPTH. 



DESCRIPTION OF 

 SAMPLE. 



3. 58'. Mainly dark red finely arenaceous chips. 



4. 77'. Mainly micaceous, greenish-gray, moder- 



ately coarse grained sandstone (?). A 

 few dark red arenaceous chips. 



5. 96'. Light gray sandstone, composed mostly of 



quartz grains, a little coarser than Xo. 4. 



6. 116'. Ditto. 



7. 135'. Slightly greenish-gray and finer grained 



chips than Nos. 5 and 6. 



8. 154'. Mostly bluish, argillaceous shale with 



some olive chips. 



9. 174'. Grayish-buff, micaceous, fine grained 



sandstone (?). 



10. 193'. Bluish-gray, argillaceous and finely 



arenaceous shale. 



11. 212'. Mixture of blue and reddish, argillaceous 



shale with greenish-gray sandstone (?) 



12. 232'. Bluish, argillaceous shale with light gray 



sandstone (?). 



Clear blue, argillaceous shale, slightly 



arenaceous. 

 About the same as No. 13. 

 Ditto. 



Bluish to greenish, argillaceous shale. 

 Bluish, argillaceous shale. 

 Blue shale with a few grayish, arenaceous 



chips. 

 Ditto. 

 Ditto. 



Mixture of brownish-red, finely arenaceous 

 chips with gray arenaceous and blue 

 shale. 



22. 425'. Fine powder of dark gray color. 



23. 444. Bluish-gray, argillaceous shale, a little 



coarser chips than No. 22. 



THICKNESS 

 OF STRATA. 



19' red shale. 



77 gray 

 sandstone. 



20' bluish 

 shale. 



19' sand- 

 stone. 



19' shale. 



39' shale and 

 sandstone (?). 



155' mainly 

 blue shale. 



19' mottled 

 shales (?). 



