SIXTH REPORT OF THE DIRECTOR I909 III 



Feet Inches 



26 Easily rotting, crystalline dolomite, calcite cement, 



Tery shaly above 9 



25 Hard, light colored, vitreous sandstone i 4 



24 Crystalline, bluish dolomite, poorly cemented by 



calcite i 7 



23 Two massive beds of blackish, subcrystalline, 

 magnesian limestone, with frequent sand grains, 

 to base of westerly cut 4 3 



22 Concealed between the two cuts ; boundary be- 

 tween Hoyt limestone and the passage beds to the 

 Potsdam, about 20 



21 Rotten, brown, calcareous sandstone, blue when 



fresh 8 



20 Hard, vitreous, light colored sandstone, banded 

 with narrow streaks of darker colored sandstone 

 with calcareous cement 2 4 



19 Thin bedded, blue, calcareous sandstone, weather- 

 ing brownish 9 



18 Blue black, oolitic dolomite, frequent rounded 



quartz grains, many small drusy cavities I 3 



17 Blue, calcareous sandstone, weathering light col- 

 ored, upper portion shaly i 8 



16 Hard, light colored, vitreous sandstone i 6 



15 Thin bedded, calcareous sandstone, somewhat 

 oolitic, blue when fresh but rapidly weathering 

 brown-mottled and crumbly, many drusy cav- 

 ities, with calcite and quartz crystals ; abundant 

 trilobite fragments, constituting' the lowest zone 

 of these so far discovered near Saratoga i 3 



14 Light colored, vitreous sandstone 2 5 



13 Bluish, nodular, finely crystalline dolomite, with a 

 slight amount of calcite cement, shaly at top 

 and bottom, with frequent nodules of crystalline 

 calcite ; holds Lingulepis acuminata. 2 3 



12 Light colored, vitreous sandstone i 3 



II Gray, banded sandstone, slightly calcareous 3 9 



10 Alternating calcareous sandstone and crystalline 

 dolomite, of blue gray color, large nodules of 

 crystalline calcite in the latter; base of cut. ... 3 

 9 Concealed between this and the next cut to the 



east, about 30 



