Limestones. 129 



north-east. At the top, the rock is thin-bedded and shaly. The 

 stripping is from six to eight feet thick. At the south end there is 

 three feet of red earth on top of the limestone. The beds dip gently 

 southward. The joints are regular, nearly vertical, and at right 

 angles to one another. The main system runs a few degrees north 

 of east. A vertical section of the beds here worked is as follows :* 



1. Blue limestone (for rubble work) 14 inches. 



2. Shaly limestone (worthless) 14 inches. 



3. Gray limestone (curb tier) 18 inches. 



4. Flint _ 1-3 inches. 



5. Gray limestone, for cut work 14 inches. 



6. Gray limestone 6 inches. 



7. Gray limestone (for large platforms) 12 inches. 



8. Gray limestone (heavy tier) 23 inches. 



9. Gray limestone (extra good) 12 inches. 



10. Gray limestone 24 inches. 



11. Light-blue limestone 5 feet. 



12. Blue limestone 3 feet. 



13. Blue limestone 4 feet. 



14. Blue limestone 1 J feet. 



15. Blue limestone 5 feet. 



Water-lime rock at bottom. 



The gray limestone of tiers Nos. 3, 5, 6, 7, 8 and 9, of the above 

 section, is used mainly for dimension work, for curbing, gutter-stone* 

 platforms and house trimmings. It is gray and of uniform shade and 

 sub-crystalline in texture. The bottom bed of gray limestone is 

 especially adapted for sills, lintels, water tables and house work gen- 

 erally. All the gray stone dresses true and when fine cut, has a light-gray 

 color, making a pleasant contrast with the plain, rock face. The cart- 

 age is by teams to railroad, one mile away. The quarry plant in- 

 cludes four derricks and one steam drill. It is above the natural 

 drainage, and no pumping is necessary. The output for 1887 was 

 valued at $35,000, and about 60 men were employed. This quarry 

 was opened in 1863. 



Johnson & Parsell work a quarry in the same ledge, but lower 

 and at the valley level. It has a face 30 feet high. The stone is blue, 

 hard and brittle, breaking with a conchoidal fracture ; and the tiers 

 are six inches to two feet thick. A small quantity is taken out an- 

 nually for common wall work. 



* Figures are from Mi-. Goodrich. 



