IIO NEW YORK STATE MUSEUM 



Feet 



show coarsely crystalline calcite cement, giving large, 

 glittering cleavage faces on freshly broken surfaces ; 

 trilobites, Lingulepis and gastropods are found from 

 bottom to top 25 



One third mile north of the Hoyt quarry is another quarry 

 face by the roadside, capped by the same Cryptozoon layer which 

 forms the base of the Hoyt quarry section. 



Feet Inches 



39 Dark blue, subcrystalline, magnesian limestone, 



full of Cryptozoon ; frequent, black oolitic grains. 1 5 



38 Massive beds of blue, finely crystalline magnesian 

 limestone, with occasional sand grains ; trilobite 

 fragments 5 5 



37 Thin bed of calcareous sandstone, weathering to 



brown, rotten stone 5 



36 Two beds of dark blue, crystalline, magnesian 



limestone with occasional sand grains 2 5 



35 Layer of dark gray, calcareous sandstone 1 7 



34 Layer of light colored, vitreous sandstone, with 



films of darker material with calcareous cement 1 3 



33 Dark colored sandstone with calcareous cement. . . 4 



12 10 



Four tenths of a mile northeast of this are two considerable 

 cuts along the Adirondack Railroad in which the following sec- 

 tion is shown. The hiatus between the two is estimated at 20 

 feet. 



Feet Inches 



32 Dark blue, subcrystalline magnesian limestone. ... 1 3 



31 Blackish oolitic dolomite 1 8 



30 Dark blue, crystalline dolomite, with calcite 

 cement, showing large, lustrous cleavage faces ; 



holds Lingulepis acuminata 10 



29 Black, oolitic dolomite, containing pebbles of mud 



limestone 1 8 



28 Rotten, crystalline dolomite, calcite cement rap- 

 idly leaching out 5 



27 Blackish, oolitic dolomite in three beds, the upper 

 a Cryptozoon bed; frequent sand grains and 

 many drusy cavities containing quartz and cal- 

 cite crystals 2 6 



